OBDII Chevrolet Code Definitions.
Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.
[ Acura ] [ Alfa Romeo ] [ Audi ] [ BMW ] [ Buick ] [ Cadillac ] [ Chevrolet ] [ Chrysler ] [ Citroen ] [ Daewoo ] [ Daihatsu ] [ Dodge ] [ Eagle ] [ Ford ] [ Freightliner ] [ GEO ] [ Genesis ] [ GM ] [ GMC ] [ Honda ] [ Hummer ] [ Hyundai ] [ Infiniti ] [ Isuzu ] [ Jaguar ] [ Jeep ] [ Kenworth ] [ Kia ] [ Lamborghini ] [ Land Rover ] [ Lexus ] [ Lincoln ] [ Mack ] [ Mahindra ] [ Mazda ] [ Mercedes-Benz ] [ Mercury ] [ Mini ] [ Mitsubishi ] [ Nissan ] [ Oldsmobile ] [ Opel ] [ Peterbilt ] [ Peugeot ] [ Plymouth ] [ Pontiac ] [ Porsche ] [ Ram ] [ Renault ] [ Saab ] [ Saturn ] [ Scion ] [ Subaru ] [ Suzuki ] [ Toyota ] [ Volvo ] [ VW ]
| Chevrolet Codes | ||
|---|---|---|
| Trouble Code | Fault Location | Probable Cause |
| B1325 | Control Module Power Circuit Low/High Voltage | |
| P0014 | Camshaft position (CMP) exhaust/right/rear, bank 1 -timing over -advanced/system performance | |
| P0171 | System too lean, bank 1 | Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector(s), HO2S |
| P0300 | Random/multiple cylinder(s) -misfire detected | Spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression, wiring |
| P0430 | Catalyst System Low Efficiency Bank 2 | Broken manifold bolts, Unsealed air filter housing, Cat converter break-in procedure |
| P0442 | Evaporative Emission Control System Leak Detected Small Leak | Purge valve, Chassis EVAP, Charcoal canister, Vent valve, Fuel tank leaks |
| P0455 | Evaporative emission (EVAP) system -large leak detected | Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve |
| P0496 | Evaporative Emission System Flow During Non-Purge | Charcoal canister, Camshaft cover leak, Purge Valve, Fuel tank cap | P1000 – P1099 (Fuel and air metering and auxiliary emission control) |
| P1011 | Intake camshaft position (CMP) actuator, bank 1 -incorrect park position | Engine oil level/pressure, mechanical fault |
| P1012 | Exhaust camshaft position (CMP) actuator, bank 1-incorrect park position | Engine oil level/pressure, mechanical fault |
| P1013 | Intake Camshaft Position Actuator Park Position Bank 2 | |
| P1014 | Exhaust camshaft position (CMP) actuator, bank 2-incorrect park position | Engine oil level/pressure, mechanical fault |
| P1031 | HO2S Heater Current Monitor Control Circuit Banks 1 and 2 Sensor 1 | |
| P1032 | HO2S Heater Warm Up Control Circuit Banks 1 and 2 Sensor 1 | |
| P1093 | Fuel rail pressure (FRP) sensor, command/actualfuel pressure -signal variation | Wiring, poor connections, FRP sensor |
| P1094 | Fuel rail pressure (FRP) sensor -signal out ofrange | Wiring, poor connections, FRP sensor | P1100 – P1199 (Fuel and air metering) |
| P1101 | Intake airflow -incorrect | Wiring, mechanical fault, engine coolant temperature (ECT) sensor, barometric pressure (BARO) sensor, intake air temperature (IAT)sensor, manifold absolute pressure (MAP) sensor,mass air flow (MAF) sensor, throttle position (TP)switch |
| P1105 | Secondary Vacuum Sensor Circuit | |
| P1106 | Manifold absolute pressure (MAP) sensor voltage high, intermittent | Wiring open circuit/short circuit to positive, poorconnections |
| P1107 | Manifold absolute pressure (MAP) sensor voltage low, intermittent | Wiring short circuit to ground, poor connections |
| P1108 | Manifold absolute pressure (MAP) sensor voltage high | Wiring open circuit/short circuit to voltage, manifold absolute pressure (MAP) sensor, exhaust gas recirculation (EGR) valve, restricted exhaust system, ECM |
| P1109 | Secondary Port Throttle System | |
| P1111 | Intake air temperature (IAT) sensor -voltage high, intermittent | Wiring open circuit/short to positive, poorconnections |
| P1112 | Intake air temperature (IAT) sensor -voltage low, intermittent | Wiring short circuit to ground |
| P1113 | Intake Resonance Switchover Solenoid Control Circuit | |
| P1114 | Engine coolant temperature (ECT) sensor voltage low, intermittent | Wiring short circuit to ground, poor connections |
| P1115 | Engine coolant temperature (ECT) sensor voltage high, intermittent | Wiring open circuit/short to positive, poor connections |
| P1116 | Engine coolant temperature (EeT) sensor circuit malfunction | Wiring, ECT sensor, ECM |
| P1117 | Engine Coolant Temperature Signal Out-Of-Range Low | |
| P1118 | Engine Coolant Temp. Signal Out-Of-Range High | |
| P1119 | Engine Coolant Temperature Signal Out Of Rage | |
| P1120 | Throttle motor position sensor 1 -circuitmalfunction | Wiring, throttle control module |
| P1121 | Throttle position (TP) sensor -voltage high, intermittent | Wiring open circuit/short to positive, poor connections |
| P1122 | Throttle position (TP) sensor -voltage low, intermittent | Wiring open circuit/short to ground, poor connections |
| P1125 | Accelerator pedal position (APP) sensor 1/2 signal malfunction | Wiring, APP sensor, ECM |
| P1130 | HO2S Circuit Low Variance Bank 1 Sensor 1 | |
| P1131 | HO2S Circuit Low Variance Bank 1 Sensor 2 | |
| P1132 | Heated oxygen sensor (H02S) 1, bank 1 signal circuit shorted to heater circuit | Wiring, H02S, ECM |
| P1133 | Heated oxygen sensor (H02S) 1, bank 1 insufficient switching | Wiring, exhaust system leaking, H02S |
| P1134 | Heated oxygen sensor (H02S) 1, bank 1 -slow response | Wiring, oxygen sensor heater, exhaust system leaking, H02S |
| P1135 | HO2S Lean Mean Bank 1 Sensor 1 | |
| P1136 | HO2S Rich Mean Bank 1 Sensor 1 | |
| P1137 | Heated oxygen sensor (H02S) 2, bank 1 voltage low | Wiring, exhaust system leaking, H02S |
| P1138 | Heated oxygen sensor (H02S) 2, bank 1 voltage high | Wiring, H02S |
| P1139 | HO2S Insufficient Switching Bank 1 Sensor 2 | |
| P1140 | HO2S Transition Time Ratio Bank 1 Sensor 2 | |
| P1141 | HO2S Heater Control Circuit Bank 1 Sensor 2 | |
| P1143 | HO2S Bank 1 Sensor 3 Lean System or Low Voltage | |
| P1144 | HO2S Bank 1 Sensor 3 Rich or High Voltage | |
| P1145 | HO2S Cross Counts Bank 1 Sensor 3 | |
| P1152 | Heated oxygen sensor (H02S) 1, bank 2 signal circuit shorted to heater circuit | Wiring, H02S, ECM |
| P1153 | Heated oxygen sensor (H02S) 1, bank 2insufficient switching | Wiring, oxygen sensor heater, exhaust system leaking, H025 |
| P1154 | Heated oxygen sensor (H02S) 1, bank 2 slow response | Wiring, oxygen sensor heater, exhaust system leaking, H025 |
| P1155 | HO2S Lean Average Bank 2 Sensor 1 | |
| P1156 | HO2S Rich Average Bank 2 Sensor 1 | |
| P1157 | HO2S Bank 2 Sensor 2 Lean System Or Low Voltage | |
| P1158 | Heated oxygen sensor (H02S) 2, bank 2 -not switching, fuel trim (FT) rich mixture | Wiring, exhaust system leaking, H02S |
| P1159 | HO2S Cross Counts Bank 2 Sensor 2 | |
| P1161 | HO2S Heater Control Circuit Bank 2 Sensor 2 | |
| P1163 | HO2S Bank 2 Sensor 3 Lean System Or Low Voltage | |
| P1164 | HO2S Bank 2 Sensor 3 Rich Or High Voltage | |
| P1165 | HO2S Cross Counts Bank 2 Sensor 3 | |
| P1166 | Heated oxygen sensor (H02S) 2, bank 1 voltage low | Wiring, exhaust system leaking, H025 |
| P1170 | Bank To Bank Fuel TrimOffset | |
| P1171 | Fuel system -lean during acceleration | Fuel filter, fuel pump, H02S, injectors |
| P1172 | Fuel level sensors, primary & secondary sensorno fuel level change during fuel transfer fromsecondary to primary tank | Wiring, fuel pump relays, secondary fuel pump, fuel level sensors, ECM |
| P1174 | Heated oxygen sensor (H02S) 1, bank 1 mixture variation between cylinders | Intake/exhaust leak/blockage, mechanical fault,ignition control, H02S |
| P1175 | Heated oxygen sensor (H02S) 1, bank 2 mixture variation between cylinders | Intake/exhaust leak/blockage, mechanical fault,ignition control, H02S |
| P1182 | Supercharger (SC) boost pressure sensor malfunction | Wiring, intake/exhaust leak/blockage, SC boost pressure sensor, SC bypass valve, BARO sensor,IAT sensor, MAP sensor, MAF sensor, ECM |
| P1183 | Supercharger (SC) boost pressure sensor voltage low | Wiring, SC boost pressure sensor, ECM |
| P1184 | Supercharger (SC) boost pressure sensor voltage high | Wiring, SC boost pressure sensor, ECM |
| P1185 | Engine Oil Temperature Sensor Circuit | |
| P1186 | Engine Oil Temperature Sensor Circuit Performance | |
| P1187 | Engine oil temperature (EOT) sensor -voltage low | Wiring open circuit/short circuit to ground, EOT sensor, ECM |
| P1188 | Engine oil temperature (EOT) sensor -voltage high | Wiring open circuit/short circuit to positive, EOT sensor, ECM |
| P1189 | Engine oil pressure warning lamp switch circuit malfunction | Wiring, engine oil pressure warning lamp switch |
| P1190 | Engine Vacuum Leak | |
| P1191 | Intake manifold system ,-air leak | Intake hose pipe connections, EGR system, ECM | P1200 – P1299 (Fuel and air metering – injector circuit) |
| P1200 | Injectors -circuit malfunction | Wiring open circuit/short circuit to ground/ short circuit to positive, injectors, ECM |
| P1201 | Gas Mass Sensor Circuit Range/Performance | |
| P1202 | Gas Mass Sensor Circuit Low Frequency | |
| P1203 | Gas Mass Sensor Circuit High Frequency | |
| P1211 | Mass Air Flow Circuit Intermittent High | |
| P1212 | Mass Air Flow Circuit Intermittent Low | |
| P1214 | Injection Pump Timing Offset | |
| P1215 | Generator Driver Circuit Conditions | |
| P1216 | Fuel Solenoid Response Time Too Short Conditions | |
| P1217 | Fuel Solenoid Response Time Too Long | |
| P1218 | Injection Pump Calibration Circuit | |
| P1219 | Throttle Position Sensor Reference Voltage | |
| P1220 | Throttle motor position sensor 2 -circuit malfunction | Wiring, throttle control module |
| P1221 | Throttle motor position sensor 1/2 -signalvariation | Wiring, throttle control module |
| P1222 | Injector control, circuit monitor -malfunction | Injector, wiring |
| P1223 | Injector 1 -circuit malfunction | Wiring, injector, FICM |
| P1224 | Injector 1 -circuit malfunction | Wiring, injector, ECM |
| P1225 | Injector Circuit Cylinder 2 Intermittent | |
| P1226 | Injector 2 -circuit malfunction | Wiring, injector, FICM |
| P1227 | Injector 2 -circuit malfunction | Wiring, injector, ECM |
| P1228 | Injector Circuit Cylinder 3 Intermittent | |
| P1229 | Injector 3 -circuit malfunction | Wiring, injector, FICM |
| P122A | Injector 3 -circuit malfunction | Wiring, injector, ECM |
| P1231 | Injector Circuit Cylinder 4 Intermittent | |
| P1232 | Injector 4 -circuit malfunction | Wiring, injector, FICM |
| P1233 | Injector 4 -circuit malfunction | Wiring, injector, ECM |
| P1234 | Injector Circuit Cylinder 5 Intermittent | |
| P1235 | Injector 5 -circuit malfunction | Wiring, injector, FICM |
| P1236 | Injector 5 -circuit malfunction | Wiring, injector, ECM |
| P1237 | Injector Circuit Cylinder 6 Intermittent | |
| P1238 | Injector 6 -circuit malfunction | Wiring, injector, FICM |
| P1239 | Injector 6 -circuit malfunction | Wiring, injector, ECM |
| P1240 | Injector Circuit Cylinder 7 Intermittent | |
| P1241 | Injector 7 -circuit malfunction | Wiring, injector, FICM |
| P1242 | Injector 7 -circuit malfunction | Wiring, injector, ECM |
| P1243 | Injector Circuit Cylinder 8 Intermittent | |
| P1244 | Injector 8 -circuit malfunction | Wiring, injector, FICM |
| P1245 | Intake Plenum Switchover Valve | |
| P1247 | Injector 8 -circuit malfunction | Wiring, injector, ECM |
| P1248 | Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit | |
| P1249 | Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit | |
| P1250 | Intake manifold heater -circuit malfunction | Wiring, intake manifold heater, intake manifold heater relay |
| P1255 | Fuel pump control module -driver over-temperature | Fuel pump control module |
| P1257 | Supercharger System Overboost | |
| P1258 | Engine overheating | Cooling system, ECT sensor |
| P1260 | Fuel Pump Speed Relay Control Circuit Conditions | |
| P1261 | Injectors 1, 4, 6 & 7 -high voltage | Wiring, injector(s), ECM, FICM |
| P1262 | Injectors 2, 3, 5 & 8 -high voltage | Wiring, injector(s), ECM, FICM |
| P1270 | Engine control module (ECM), APP sensor signal-analogue/digital process malfunction | Engine control module (ECM) |
| P1271 | Accelerator pedal position (APP) sensor 1/2 signal variation | Wiring, APP sensor, ECM |
| P1272 | Accelerator pedal position (APP) sensor 2/3 -signal variation | Wiring, APP sensor, ECM |
| P1273 | Accelerator pedal position (APP) sensor 1/3 –signal variation | Wiring, APP sensor, ECM |
| P1274 | Injectors Wired Incorrectly | |
| P1275 | Accelerator pedal position (APP) sensor 1 circuitmalfunction | Wiring, APP sensor, ECM |
| P1276 | Accelerator pedal position (APP) sensor 1 rangeperformance | . Wiring, APP sensor, ECM |
| P1277 | Accelerator pedal position (APP) sensor 1 voltage low | Wiring, APP sensor, ECM |
| P1278 | Accelerator pedal position (APP) sensor 1voltage high | Wiring, APP sensor, ECM |
| P1280 | Accelerator pedal position (APP) sensor 2 circuit malfunction | Wiring, APP sensor, ECM |
| P1281 | Accelerator pedal position (APP) sensor 2 range performance | Wiring, APP sensor, ECM |
| P1282 | Accelerator pedal position (APP) sensor 2voltage low | Wiring, APP sensor, ECM |
| P1283 | Accelerator pedal position (APP) sensor 2voltage high | Wiring, APP sensor, ECM |
| P1285 | Accelerator pedal position (APP) sensor 3 circuitmalfunction | Wiring, APP sensor, ECM |
| P1286 | Accelerator pedal position (APP) sensor 3 range performance | Wiring, APP sensor, ECM |
| P1287 | Accelerator Pedal Position Sensor 3 Circuit Low Voltage | |
| P1288 | Accelerator pedal position (APP) sensor 3voltage high | Wiring, APP sensor, ECM |
| P1293 | Fuel injection control module -circuit malfunction bank 1 | Fuel injection control module |
| P1294 | Fuel injection control module -circuit malfunction bank 2 | Fuel injection control module |
| P1295 | Fuel injection control module -circuit malfunction bank 1 | Fuel injection control module |
| P1296 | Fuel injection control module -circuit malfunction bank 2 | Fuel injection control module |
| P129D | Ignition switch circu it 1 -low voltage | Wiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay |
| P129F | Fuel pump speed signal -incorrect | Wiring, fuel pump flow control module (FPMC), fuel pump flow control module (FPCM) relay |
| P12A1 | Fuel pump speed circuit -high duty cycle | Wiring, fuel pump flow control module (FPMC), fuel pump flow control module (FPCM) relay |
| P12A2 | Fuel pump speed circuit -performance | Wiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay |
| P12A4 | Fuel pump enable circuit voltage -low | Wiring, fuel pump flow control module (FPMC), fuel pump flow control module (FPCM) relay |
| P12A5 | Fuel pump enable circuit voltage -high | Wiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay |
| P12A6 | Fuel pump enable circuit voltage -performance | Wiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay |
| P12A7 | Fuel pump phase U-V-W circuit | Wiring, fuel pump flow control module (FPCM) relay |
| P12AO | Fuel pump speed circuit -low duty cycle | Wiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay | P1300 – P1399 (Ignition system or misfire) |
| P1300 | Ignition coil 1 control -feedback circuit malfunction | Wiring, ignition coil 1, ECM |
| P1305 | Ignition coil 2 control -feedback circuitmalfunction | Wiring, ignition coil 2, ECM |
| P1310 | Ignition coil 3 control -feedback circuitmalfunction | Wiring, ignition coil 3, ECM |
| P1315 | Ignition coil 4 control -feedback circuitmalfunction | Wiring, ignition coil 4, ECM |
| P1320 | IC Module 4X Reference Circuit Intermittent No Pulses | |
| P1321 | Electronic Ignition System Fault Line | |
| P1322 | EI System or Ignition Control Extra or Missing | |
| P1323 | IC 24X Reference Circuit Low Frequency | |
| P1324 | Crank RPM Too Low | |
| P1335 | Crankshaft position (CKP) sensor -circuit malfunction | Wiring, CKP sensor, ECM |
| P1336 | Crankshaft position (CKP) sensor -variation notlearned | Learning procedure not performed |
| P1345 | Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation | CKP sensor, distributor/camshaft alignment, mechanical fault |
| P1346 | Camshaft position actuator -circuit malfunction | Wiring, mechanical fault, camshaft position actuator, ECM |
| P1349 | Camshaft position actuator -circuit malfunction | Wiring, mechanical fault, camshaft position actuator, ECM |
| P1350 | Ignition control system, bypass monitor circuitmalfunction | Wiring, poor connections, ICM, ECM |
| P1351 | Ignition control system, coil -voltage high | Wiring open circuit, ICM, ECM |
| P1352 | Ignition control system, bypass circuit voltage high | Wiring open circuit, ICM, ECM |
| P1353 | Ignition control module (ICM) -ignition coil 3circuit voltage high | Wiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM |
| P1354 | Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 4 | |
| P1355 | Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 5 | |
| P1356 | Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 6 | |
| P1357 | Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 7 | |
| P1358 | Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 8 | |
| P1359 | Ignition Control Circuit Group 1 | |
| P1360 | Ignition Control Circuit Group 2 | |
| P1361 | Ignition control system, ignition control (IC) circuit -voltage low | Wiring, circuit short circuit to positive/ ground,poor connections, ICM, ECM |
| P1362 | Ignition control, bypass circuit -voltage low | Wiring short circuit to positive/ground, ICM, ECM |
| P1363 | Ignition control module (ICM) -ignition coil 3 circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1364 | Ignition Control Cylinder 4 Not Toggling After Enable | |
| P1365 | Ignition Control Cylinder 5 Not Toggling After Enable | |
| P1366 | Ignition Control Cylinder 6 Not Toggling After Enable | |
| P1367 | Ignition Control Cylinder 7 Not Toggling After Enable | |
| P1368 | Ignition Control Cylinder 8 Not Toggling After Enable | |
| P1370 | Ignition Control Module 4X Reference Circuit Too Many Pulses | |
| P1371 | Ignition control reference signal. low/high resolution -low signal lost | Wiring,lCM |
| P1372 | Crankshaft Position Sensor A-B Correlation Conditions | |
| P1374 | Crankshaft position (CKP) sensor, high to lowresolution frequency -signal variation | Wiring, wiring routed near spark plug wires, ignition coils arCing/tracking, ICM, ECM |
| P1375 | IC 24X Reference Circuit High Voltage | |
| P1376 | Ignition Ground Circuit | |
| P1377 | Ignition Control Module Cam Ref Pulse To 4X Ref Pulse Incorrect | |
| P1380 | Antilock brake system (ABS)/traction control system (TCS), rough road signal to engine control module (ECM) -malfunction | ABS trouble code(s) stored |
| P1381 | Antilock brake system (ABS)/traction control system (TCS), rough road signal to engine control module (ECM) -no communication | Wiring, poor connections, ABS |
| P1390 | Wheel Speed Sensor 1 G-Sensor Circuit | |
| P1391 | Rough road sensor -signal malfunction | Wiring, rough road sensor, ECM |
| P1392 | Rough road sensor -voltage low | Wiring, rough road sensor, ECM |
| P1393 | Rough road sensor -voltage high | Wiring, rough road sensor, ECM |
| P1394 | Wheel Speed Sensor 1 G-Sensor Circuit Intermittent | |
| P1395 | Wheel Speed Sensor 2 G-Sensor Circuit | |
| P1396 | Rough road sensor -signal malfunction | Wiring, rough road sensor, wheel speed sensor, ECM |
| P1397 | Rough road sensor -signal malfunction | Wiring, rough road sensor, wheel speed sensor, ABS control module |
| P1398 | Wheel Speed Sensor 2 G-Sensor Circuit High Voltage | |
| P1399 | Wheel Speed Sensor 2 G-Sensor Circuit Intermittent | P1400 – P1499 (Emission control) |
| P1400 | Cold start emission control -malfunction | Intake/exhaust leak/blockage, mechanical fault, idlespeed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H02S |
| P1403 | Exhaust gas recirculation (EGR) solenoid 1circuit malfunction | Wiring, EGR valve, ECM |
| P1404 | Exhaust gas recirculation (EGR) valve not fully closing | Wiring, poor connections, EGR valve position sensor, EGR solenoid |
| P1405 | Exhaust gas recirculation (EGR) solenoid 3 circuit malfunction | Wiring, EGR valve, ECM |
| P1406 | Exhaust gas recirculation (EGR) valve position sensor range performance | Wiring, EGR valve tight/sticking, EGR valve position sensor |
| P1407 | EGR Air Intrusion in Exhaust Supply to EGR Valve | |
| P1408 | Manifold absolute pressure (MAP) sensor voltageout range | Wiring, poor connections, MAP sensor, ECM |
| P1409 | EGR Vacuum System Leak | |
| P1410 | Evaporative emission (EVAP) canister purge valve-circuit malfunction | Wiring, poor connections, EVAP canister vent valve, ECM |
| P1415 | Secondary air injection (AIR) system, bank 1 | Wiring, hoses blocked/leaking, AIR valve |
| P1416 | Secondary air injection (AIR) system, bank 2 | Wiring, hoses blocked/leaking, AIR valve |
| P1418 | Secondary Air Injection System Relay 'A' Control Circuit High | |
| P1420 | Intake Air Low Pressure Switch Circuit Low Voltage | |
| P1421 | Intake Air Low Pressure Switch Circuit High Voltage | |
| P1423 | Intake Air High Pressure Switch Circuit High Voltage | |
| P1431 | Fuel level sensor -circuit malfunction | Wiring, fuel level sensor |
| P1432 | Fuel level sensor low voltage | Wiring open circuit, fuel level sensor |
| P1433 | Fuel level sensor -voltage high | Wiring short circuit to positive, fuel level sensor |
| P1441 | Evaporative emission (EVAP) system -leak detected | Hose connection(s), EVAP canister, EVAP canister purge valve |
| P1442 | Evaporative emission (EVAP) system vacuum switch -circuit malfunction | Hoses blockedlleaking, wiring, EVAP canister, ECM |
| P1448 | Diesel particulate filter (DPF) regeneration frequency -too low | Hoses blockedlleaking, exhaust, exhaust pressure sensor |
| P1450 | Barometric pressure (BARO) sensor -voltage outof range | Wiring, BARO sensor, ECM |
| P1451 | Barometric pressure (BARO) sensor performance range | Wiring, poor connections, BARO sensor, ECM |
| P1460 | Cooling Fan Control System | |
| P1480 | Cooling Fan 1 Control Circuit High | |
| P1481 | Cooling Fan Speed Signal Lost | |
| P1482 | Cooling Fan Circuit Condition | |
| P1483 | Engine cooling system -performance | Cooling system, ECT sensor, IAT sensor |
| P1484 | Cooling Fan RPM Signal Malfunction | P1500 – P1599 (Vehicle or idle speed control) |
| P1500 | Ignition switch, cranking signal/system voltage -circuit malfunction | Wiring, poor connections, ECM |
| P1501 | Theft Deterrent System Fault Conditions | |
| P1502 | Theft Deterrent Fuel Enable Signal Not Received | |
| P1503 | Theft Deterrent Fuel Enable Signal Not Correct | |
| P1504 | Engine control module (ECM). vehicle speed sensor (VSS) output signal -circuit malfunction | Wiring, poor connections, ABS, ECM |
| P1508 | Idle air control (lAC) valve -low rpm | Wiring open circuit/short circuit to ground/short circuit to positive, lAC valve, throttle valve tight/sticking |
| P1509 | Idle air control (lAC) valve -high rpm | Wiring open circuit/short circuit to ground/short circuit to positive, lAC valve, throttle valve tight/sticking |
| P1510 | Engine control module (ECM), KAM supply voltage -circuit malfunction | Wiring, poor connections, ECM |
| P1511 | Throttle Control System Backup System Performance | |
| P1512 | Throttle control unit -signal variation | Wiring, throttle control unit, ECM |
| P1514 | Throttle control unit, intake air flow -excessive | Throttle control unit, MAP sensor, CMP sensor signal, ECM |
| P1515 | Throttle command/actual throttle position -signalvariation | Wiring, throttle valve sticking, throttle control module |
| P1516 | Throttle command/actual throttle position signal variation | Wiring, throttle valve sticking, throttle control module |
| P1517 | Throttle control module -malfunction | Throttle control module |
| P1518 | Throttle control. module/engine control module(ECM) -communication malfunction | Wiring, throttle control module, ECM |
| P1519 | Throttle motor position sensor 1 -signal malfunction | Throttle control module |
| P1520 | Park/neutral position (PNP) switch -circuit malfunction | Wiring short circuit to ground, PNP switchincorrectly adjusted |
| P1521 | Transmission Engaged at High Throttle Angle | |
| P1522 | Park/Neutral to Drive/Reverse at High RPM | |
| P1523 | Throttle control unit, closed throttle position -performance | Throttle valve movement restricted, throttle control unit |
| P1524 | Throttle Closed Position Performance | |
| P1525 | Throttle Body Service Required | |
| P1526 | Minimum Throttle Position Not Learned Conditions | |
| P1527 | Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range | |
| P1528 | Governor | |
| P1529 | Heated Windshield Request Problem | |
| P1530 | A/C refrigerant pressure sensor/switch -circuitmalfunction | Wiring, A/C refrigerant pressure sensor/ switch, ECM |
| P1531 | A/C refrigerant pressure sensor -voltage low | Incorrect refrigerant charge, wiring, A/C refrigerant pressure sensor, ECM |
| P1532 | AlC refrigerant temperature sensor -voltage low | Wiring open circuit/short circuit to ground, AlC refrigerant temperature sensor, ECM |
| P1533 | AlC refrigerant temperature sensor -voltage high | Wiring open circuit/short circuit to ground, AlC refrigerant temperature sensor, ECM |
| P1534 | A/C High Side Temperature Sensor Low Voltage | |
| P1535 | A/C High Side Temperature Sensor Circuit | |
| P1536 | Engine Coolant Overtemperature Air Conditioning Disabled | |
| P1537 | A/C Request Circuit Low Voltage | |
| P1538 | A/C Request Circuit High Voltage | |
| P1539 | AlC compressor clutch relay -voltage high | Wiring, AlC compressor clutch relay, ECM |
| P1540 | A/C System High Pressure | |
| P1541 | A/C High Side Over Temperature | |
| P1542 | A/C System High Pressure High Temperature | |
| P1543 | AlC system -performance | Refrigerant low, wiring, AlC refrigerant pressure sensor, AlC evaporator temperature sensor, ECM |
| P1544 | A/C Refrigerant Condition Very Low | |
| P1545 | AlC compressor clutch relay -voltage low | Wiring, AlC compressor clutch relay, ECM |
| P1546 | A/C compressor clutch relay -circuit malfunction | Wiring, A/C compressor clutch relay, ECM |
| P1547 | A/C System Performance Degraded | |
| P1548 | A/C Recirculation Circuit | |
| P154A | Intake air heater -feedback circuit | Wiring, glow plug control module, intake air heater |
| P154B | Intake air heater -voltage signal circuit | Wiring, glow plug control module, intake air heater |
| P154C | Intake air heater -current signal circuit | Wiring, glow plug control module, intake air heater |
| P154D | Intake air heater -temperature signal circuit | Wiring, glow plug control module, intake air heater |
| P1550 | Cruise control system, motor actuator -circuitmalfunction | Wiring, poor connections, cruise control motor/actuator, ECM |
| P1551 | Throttle valve -rest position incorrect | Wiring, throttle body mechanical fault, throttle body, ECM , |
| P1554 | Cruise control status circuit -high voltage | Wiring open circuit/short circuit to ground, cruise control module, ECM |
| P1555 | Electronic Variable Orifice Output | |
| P1558 | Cruise control system -performance low | Wiring, poor connections, throttle cable sticking, electrical interference |
| P1559 | Cruise Control Power Management Mode | |
| P1560 | Transaxle Not in Drive Cruise Control Disabled | |
| P1561 | Cruise control, vent solenoid -circuit malfunction | Wiring, solenoid valve |
| P1562 | Cruise control, vacuum solenoid -circuit malfunction | Wiring, solenoid valve |
| P1563 | Cruise Vehicle Speed/Set Speed Difference Too High | |
| P1564 | Cruise Control System Vehicle Acceleration Too High | |
| P1565 | Cruise control servo position sensor -circuit malfunction | Wiring, poor connections, servo position sensor |
| P1566 | Cruise Control System Engine RPM Too High | |
| P1567 | Cruise control master switch -circuit malfunction | Wiring, poor connections, cruise control master switch |
| P1568 | Cruise control system -performance high | Wiring, poor connections, throttle cable sticking |
| P1569 | Cruise Servo Stroke High While Not In Cruise | |
| P1570 | Cruise Control System Traction Control Active | |
| P1571 | Traction control system (TCS), torque request signal -malfunction | Wiring, poor connections, ABSITCS |
| P1572 | Traction control system (TCS). active signal -malfunction | Wiring short to ground, ABSITCS, ECM |
| P1573 | Engine control module (ECM), antilock brake system (ASS)/traction control system (TCS)communication -malfunction | Wiring, poor connections, ABS control module, ECM |
| P1574 | Brake pedal position (BPP) switch, voltage high | Wiring, ABS |
| P1575 | Brake pedal position (BPP) .switch. extended travel contacts -voltage high | Wiring, ABS |
| P1576 | Brake Booster Vacuum Sensor Circuit High Voltage | |
| P1577 | Brake Booster Vacuum Sensor Circuit Low Input | |
| P1578 | Brake Booster Vacuum Sensor Circuit Low Vacuum | |
| P1579 | P/N to D/R at High Throttle Angle - Power Reduction Mode Active | |
| P1580 | Cruise Move Circuit Low Voltage | |
| P1581 | Cruise Control Module Move Circuit High Input Conditions | |
| P1582 | Cruise Control Module Direction Low Input Conditions | |
| P1583 | Cruise Direction CircuitHigh Voltage | |
| P1584 | Cruise Control Disabled | |
| P1585 | Cruise control system, inhibit output circuit | Wiring, poor connections, cruise control motor/actuator, ECM |
| P1586 | Cruise control system. brake switch 2 -circuit malfunction | Wiring, poor connections, BPP switch |
| P1587 | Cruise Control Clutch Control Circuit Low | |
| P1588 | Cruise Control Clutch Control Circuit High | |
| P1599 | Cruise control system -engine management has operated in limited power mode | Throttle cable sticking, brake vacuum release valve, cruise control actuator, electricalinterference | P1600 – P1699 (ECM – computer output circuit) |
| P1600 | Engine control module (ECM) -malfunction | ECM |
| P1601 | CAN data bus, ECM/ASSITCS/instrumentation control module/diagnostic control module some communication lost | Wiring, poor connections, ECM, ABSITCS, diagnostic control module, instrumentation control module |
| P1602 | CAN data bus -antilock brake system (ASS)/ traction control system (TCS) | Wiring, ABSITCS control module trouble code(s) stored |
| P1603 | Loss Of Sensing Diagnostic Mode Data Conditions | |
| P1604 | CAN data bus -instrument panel | Wiring, BCM trouble code(s) stored |
| P1605 | CAN data bus -A/C | Wiring, A/C system trouble code(s) stored |
| P1606 | Serial Communication Problem With Device 6 | |
| P1607 | Serial Communication Problem With Device 7 | |
| P1608 | Serial Communication Problem With Device 8 | |
| P1609 | Loss Of TCS Serial Data | |
| P160C | Glow plug control module engine calibration information -not programmed | Program fuel injection flow rate |
| P1610 | CAN data bus -body control module (SCM) | Wiring, SCM trouble code(s) stored |
| P1611 | Loss Of Continuous Variable Real Time Damping Serial Data Conditions | |
| P1612 | Loss Of IPM Serial Data | |
| P1613 | Loss Of DIM Serial Data | |
| P1614 | Loss Of RIM Serial Data | |
| P1615 | Loss Of VTD Serial Data | |
| P1617 | Engine Oil Level Switch Circuit | |
| P1619 | Engine Oil Life Monitor Reset Circuit | |
| P161B | Throttle motor control module -performance | ECM, transmission, AlC compressor, manifold absolute pressure (MAP) sensor hose |
| P1620 | Low Engine Coolant Circuit Conditions | |
| P1621 | Engine control module (ECM) -malfunction | ECM |
| P1622 | Cylinder Select | |
| P1623 | Engine control module (ECM), PROM -malfunction | Poor connections, incorrect programming, ECM |
| P1624 | Engine control module (ECM) memory performance | ECM |
| P1625 | PCM Flash Checksum TCM Conditions | |
| P1626 | Engine control module (ECM) -fuel enable signal lost | Wiring, poor connections, immobilizer control module, ECM |
| P1627 | Engine control module (ECM) -malfunction | ECM |
| P1628 | Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions | |
| P1629 | Engine control module (ECM) -fuel enable signal not received | Incorrect ignition key, wiring, poor connections, immobilizer control module, ECM |
| P1630 | Engine control module (ECM). immobilizer code -leaming mode | ECM immobilizer code programming not completed |
| P1631 | Engine control module (ECM) -incorrect immobilizer code | Incorrect key, immobilizer code not programmed |
| P1632 | Engine control module (ECM) -fuel disable signal received | Fuses, BCM, immobilizer code |
| P1633 | Engine control module (ECM), ignition supply voltage | Fuse, wiring open circuit, ECM |
| P1634 | Engine control module (ECM), ignition supply voltage | Fuse, wiring open circuit, ECM |
| P1635 | Engine control module (ECM). sensor supply voltage -circuit malfunction | Wiring, poor connections, TP sensor, MAP sensor, EGR valve position sensor, FTP sensor, ECM |
| P1636 | PCM Stack Overrun | |
| P1637 | Alternator warning lamp. control signal -circuit malfunction | Wiring, instrument panel, ECM |
| P1638 | Alternator ‘F’ terminal -circuit malfunction | Wiring open circuit/short circuit to ground,alternator, ECM |
| P1639 | Engine control module (ECM). sensor supply voltage -circuit malfunction | Wiring. poor connections, A/C refrigerant pressure sensor. FTP sensor. ECM |
| P1640 | Engine control module, output driver 1 -supplyv oltage high | Wiring, loose alternator connection, alternator |
| P1641 | Malfunction indicator lamp (MIL) -circuit malfunction | Wiring, poor connections, MIL, ECM |
| P1642 | Secondary air injection (AIR) pump relay circuit malfunction | Wiring, AIR pump relay, ECM |
| P1643 | Glow plug warning lamp -circuit malfunction | Wiring, glow plug warning lamp, ECM |
| P1644 | Traction control system (TCS). delivered torque signal -malfunction | Wiring, poor connections, ECM |
| P1645 | Evaporative Emission Vent Solenoid Control Circuit | |
| P1646 | EVAP Vent Solenoid Output Circuit | |
| P1647 | Driver 1 Line 7 | |
| P1648 | Anti-Theft Device Wrong Security Code | |
| P1650 | Engine control module, output driver 2 -supply voltage high | Wiring, loose alternator connection, alternator |
| P1651 | Engine coolant blower motor relay 1 -circuit malfunction | Wiring, engine coolant blower motor relay, ECM |
| P1652 | Engine coolant blower motor relay 2 -circuit malfunction | Wiring, engine coolant blower motor relay(s), ECM |
| P1653 | Engine oil level ‘low’ warning lamp, control signal -circuit malfunction | Wiring short circuit to ground, engine oil level, ECM |
| P1654 | A/C compressor clutch relay -circuit malfunction | Wiring open circuit/short circuit to ground, A/C compressor clutch relay, ECM |
| P1655 | Evaporative emission (EVAP) canister purge valve -circuit malfunction | Wiring open circuit/short circuit to ground, EVAP canister vent valve, ECM |
| P1656 | Camshaft position actuator -circuit malfunction | Wiring open circuit/short circuit to ground, camshaft position actuator, ECM |
| P1657 | Skip shift solenoid -circuit malfunction | Wiring, skip shift solenoid, ECM |
| P1658 | Fuel injector control module (FICM) -malfunction | FICM |
| P1660 | Engine control module, output driver 3 -supply voltage high | Wiring, loose alternator connection, alternator |
| P1661 | Malfunction indicator lamp (MIL) -circuit malfunction | Wiring, MIL, ECM |
| P1662 | Cruise control, inhibit output circuit malfunction | Wiring open circuit/short circuit to ground, cruise control motor/actuator, cruise control module, ECM |
| P1663 | Alternator warning lamp, control signal -circuitmalfunction | Wiring, instrument panel, ECM |
| P1664 | Skip shift warning lamp -circuit malfunction | Wiring, skip shift warning lamp, ECM |
| P1665 | Evaporative emission (EVAP) canister vent valve -circuit malfunction | Wiring open circuit/short circuit to ground, EVAP canister vent valve, ECM |
| P1666 | Driver 3 Line 6 | |
| P1667 | Reverse inhibit solenoid -circuit malfunction | Wiring, reverse inhibit solenoid, ECM |
| P1668 | Alternator ‘L’ terminal -circuit malfunction | Wiring, voltage regulator, alternator, ECM |
| P1669 | ABS Unit Expected | |
| P166B | Intake air heater -over temperature | Intake air heater |
| P166C | Intake air heater -resistance | Intake air heater |
| P1670 | ECM -internal circuit malfunction, ignition coil | ECM |
| P1671 | Malfunction indicator lamp (MIL) -circuit malfunction | Wiring open circuit/short circuit to groundl short circuit to positive, MIL, ECM |
| P1672 | Engine oil level ‘low’ warning lamp, control signal -circuit malfunction | Wiring short circuit to ground, engine oil level, ECM |
| P1673 | Engine coolant ‘hot’ waming lamp, control signal -circuit malfunction | Wiring, instrument panel, cooling system, ECM |
| P1674 | Tachometer -circuit malfunction | Wiring open circuit/short circuit to groundl shortcircuit to positive, instrument panel, ECM |
| P1675 | Evaporative emission (EVAP) canister vent valve -circuit malfunction | Wiring, poor connection, EVAP canister vent valve, ECM |
| P1676 | Evaporative emission (EVAP) canister purgevalve -circuit malfunction | Wiring open circuit/short circuit to ground, EVAP canister purge valve, ECM |
| P1677 | Immobilizer Function Deactivated | |
| P1678 | Immobilizer Powertrain Identification Failed | |
| P1679 | Immobilizer Environment Identification Failed | |
| P167A | ECM -internal circuit malfunction, heated oxygen sensor (H02S) 1, bank 1 | ECM |
| P1680 | Engine control module (ECM) -malfunction | ECM |
| P1681 | Engine control module (ECM) -malfunction | ECM |
| P1682 | Engine control module (ECM) -ignition power supply variation | Wiring, EC relay, starter motor relay, ECM |
| P1683 | Engine control module (ECM) -malfunction | ECM |
| P1684 | Transmission Control Module Power Up Temperature Sensor Performance | |
| P1685 | Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage | |
| P1686 | Transmission Control Module Power Up Temperature Sensor Circuit High Voltage | |
| P1687 | Fuel injector control module (FICM) -stuck on | ECM, FICM |
| P1689 | Traction control system (TCS), delivered torque signal -malfunction | Wiring, poor connections, ECM |
| P1690 | Engine Control Module Loop Overrun | |
| P1691 | Coolant Gauge Circuit Conditions | |
| P1692 | Coolant Gauge Circuit High Voltage | |
| P1693 | Tachometer Circuit Conditions | |
| P1694 | Tachometer Circuit High Voltage | |
| P1695 | Remote Keyless Entry Circuit Low Input Conditions | |
| P1696 | Remote Keyless Entry Circuit High Input Conditions | |
| P16F3 | Engine control module (ECM) -malfunction | ECM | P1700 – P1799 (Transmission) |
| P1700 | Transmission control module (TCM) -MIL request circuit malfunction | OBO II TCM trouble codes stored |
| P1701 | Transmission MIL Request Circuit | |
| P1705 | Park Neutral Output Circuit Conditions | |
| P1713 | Transmission Fluid Pressure Sensor/Switch | |
| P1719 | Transmission control module (TCM) -detects excessive variation between transmission input/output shaft speed sensors | Transmission fluid level, line pressure, stuck/sticking SS |
| P1740 | Cruise control system, overdrive disable signal -voltage low | Wiring short to ground, ECM |
| P1743 | Throttle Position Invalid Signal | |
| P1760 | Transaxle Control Module Supply Voltage Interrupted | |
| P1779 | Engine control module (ECM), torque reduction signal via controller area network (CAN) data bus -out of range | Wiring, TCM, ECM |
| P1780 | Engine control module (ECM), controller area network (CAN) data bus -lost communication with transmission control module (TCM) | Wiring, ECM |
| P1781 | Engine control module (ECM), torque reduction signal -out of range | Wiring, TCM, ECM |
| P1790 | Transmission Control Module Checksum | |
| P1791 | Engine control module (ECM), accelerator pedal position (APP) sensor signal via controller area network (CAN) data bus -out of range | Wiring, APP sensor, TCM, ECM |
| P1792 | Engine control module (ECM), engine coolant temperature (ECT) sensor signal via controller area network (CAN) data bus -out of range | Wiring, ECT, TCM, ECM |
| P1793 | Transmission Control Module Stack Overrun | |
| P1795 | Throttle Body Position | P1800 – P1899 (Transmission) |
| P1800 | ECM to TCM Engine Coolant Signal | |
| P1801 | Performance Selector Switch Failure | |
| P1804 | Ground Control Relay | |
| P1810 | Transmission fluid pressure (TFP) switch manual valve position | Fluid level low, wiring, selector lever linkage incorrectly adjusted, ECMITCM |
| P1811 | Shift time too long -adaptation limit reached | Fluid level low, transmission mechanical fault |
| P1812 | Transmission Fluid Overtemperature | |
| P1813 | Torque Control Solenoid Malfunction | |
| P1814 | Torque converter clutch (TCC) -over-stressed | Fluid level low, fluid condition, transmission mechanical fault |
| P1815 | A/T Range Sensor Circuit Malfunction | |
| P1816 | Transmission fluid pressure (TFP) switch -invalidgear selection | Wiring, selector lever linkage incorrectly adjusted, TFP switch, ECMITCM |
| P1818 | Transmission fluid pressure (TFP) switch -invalidgear selection | Wiring, selector lever linkage incorrectly adjusted, TFP switch, ECMITCM |
| P1819 | Transmission range (TR) switch, signals ‘AlBIC &P’ -signal variation | Wiring, TR switch |
| P1820 | Transmission range (TR) switch, signal ‘A’ voltage low | Wiring short to ground, TR switch |
| P1822 | Transmission range (TR) switch, signal ‘B’ voltage high | Wiring, TR switch |
| P1823 | Transmission range (TR) switch, signal ‘P’ voltagelow | Wiring short to ground, TR switch |
| P1824 | Internal Mode Switch 'P' Circuit High Voltage | |
| P1825 | Transmission range (TR) switch, signals ‘AlBIC &P’ incorrect signal | Wiring, TR switch |
| P1826 | Transmission range (TR) switch, signal ‘C’ voltage high | Wiring, TR switch |
| P1831 | PC Solenoid Power Circuit Low Voltage | |
| P1833 | A/T Solenoids Power Circuit Low Voltage | |
| P1835 | Kick-Down Switch Circuit | |
| P1836 | Kick-Down Switch Failed Open | |
| P1837 | Kick-Down Switch Failed Short | |
| P1838 | Internal Mode Switch 'A' Circuit High Voltage | |
| P1839 | Internal Mode Switch 'C' Circuit Low Voltage | |
| P1840 | Internal Mode Switch 'S' Circuit Low Voltage | |
| P1841 | Internal Mode Switch 'S' Circuit High Voltage | |
| P1842 | 1-2 Shift Solenoid Circuit Low Input Voltage | |
| P1843 | 1-2 Shift Solenoid Circuit High Input Voltage | |
| P1844 | Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent | |
| P1845 | 2-3 Shift Solenoid Circuit Low Input Voltage | |
| P1847 | 2-3 Shift Solenoid Circuit High Input Voltage | |
| P1850 | Brake Band Apply Solenoid Circuit | |
| P1852 | Brake Band Apply Solenoid Low Input Voltage | |
| P1853 | Brake Band Apply Solenoid High Input Voltage | |
| P1860 | Torque converter clutch (TCC) solenoid -circuit malfunction | Wiring open circuit/short circuit to ground, TCCsolenoid, ECM |
| P1864 | Torque Converter Clutch Enable Solenoid Electrical Fault Conditions | |
| P1868 | Transmission fluid life | Replace transmission fluid and filter |
| P1870 | Torque converter clutch (TCC) -slip speed excessive | Transmission fluid level, wiring, TCC solenoid,ECM |
| P1873 | Torque Converter Clutch Stator Temperature Switch Circuit Low | |
| P1874 | Torque Converter Clutch Stator Temperature Switch Circuit High | |
| P1875 | Transmission, 4WD low selection signal-circuit malfunction | Wiring, transmission, four wheel drive control module, ECM |
| P1884 | TCC Enable/Shift Light Circuit | |
| P1886 | Transaxle Shift Timing Solenoid Performance | |
| P1887 | Torque converter clutch (TCC) solenoid release switch -circuit malfunction | Wiring open circuit, TCC solenoid release switch,ECMITCM |
| P1890 | Throttle Position Signal Input | |
| P1891 | Throttle Position Sensor PWM Signal Low | |
| P1892 | Throttle Position Sensor PWM Signal High | |
| P1893 | Engine Torque Signal Low Voltage | |
| P1894 | Engine Torque Signal High Voltage | |
| P1895 | Engine Torque Delivered Circuit | P1900 – P1999 (Transmission) |
| P1915 | Internal Mode Switch Start/Wrong Range | |
| P3400 | Cylinder cut-out system -malfunction | Wiring, intake system leaking, mechanical fault,MAF sensor, MAP sensor, TP sensor, ECM |
| P3401 | Cylinder cut-out solenoid, cylinder 1 malfunction | Wiring, cylinder cut-out solenoid, mechanical fault,ECM |
| P3425 | Cylinder cut-out solenoid, cylinder 4 malfunction | Wiring, cylinder cut-out solenoid, mechanical fault, ECM |
| P3441 | Cylinder cut-out solenoid, cylinder 6 malfunction | Wiring, cylinder cut-out solenoid, mechanical fault, ECM |
| P3449 | Cylinder cut-out solenoid, cylinder 7 malfunction | Wiring, cylinder cut-out solenoid, mechanical fault, ECM | U1000 – U2000 (Manufacturer defined, common defination listed) |
| U1000 | CAN data bus -communication malfunction | Wiring, BCM, ECM, antilock brake system (ABS)/traction control system (TCS), instrumentation control module, SDM |
| U1016 | CAN data bus, engine control module (ECM)/antilock brake system (ABS)/traction control system (TCS)/instrumentation control modulel diagnostic control module -loss of serial communication | Wiring, poor connections, ECM, ABS/TCS, diagnostic control module, instrumentation control module |
| U1026 | Transmission control module (TCM)/four wheel drive control module, CAN data buscommunication malfunction | Wiring, SCM |
| U1040 | Antilock brake system (ABS)/traction control system (TCS), CAN data bus -communication malfunction | Wiring, ABS/TCS trouble codes stored |
| U1041 | Antilock brake system (ABS)/traction control system (TCS), CAN data bus -communication malfunction | Wiring, ABSITCS trouble codes stored |
| U1064 | . Body control module (BCM), CAN data bus -communication malfunction | Wiring, BCM |
| U1192 | Engine control module (ECM)/immobilizer control module, CAN data bus -Signal malfunction | Wiring, immobilizer control module, ECM |
| U1193 | Engine control module (ECM)/immobilizer control module, CAN data bus -signal malfunction | Wiring, immobilizer control module, ECM |
| U1300 | CAN data bus -signal low | Wiring |
| U1301 | CAN data bus -Signal high | Wiring |
| U1510 | Lost Communication With HVAC Control Module | |
| U1800 | Engine control module (ECM)/fuel injector control module (FICM), CAN data bus -communication malfunction | Wiring, FICM, ECM |
| U1802 | Fuel pump control module (FPCM)communication malfunction | Wiring, fuel pump control module (FPCM), fuel pump control module (FPCM) relay |
| U2104 | Engine control module (ECM)/transmissioncontrol module (TCM)/fuel injector control module (FICM), CAN data bus communication malfunction | Wiring, TCM, FICM, ECM |
| U2106 | Engine control module (ECM)/transmission control module (TCM)/fuel injector control module (FICM), CAN data bus communication malfunction | Wiring, TCM, ECM, FICM |