OBDII Ford 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 ] [ Audi ] [ BMW ] [ Buick ] [ Cadillac ] [ Chevrolet ] [ Chrysler ] [ Dodge ] [ Eagle ] [ Ford ] [ Freightliner ] [ GM ] [ Honda ] [ Hummer ] [ Hyundai ] [ Infiniti ] [ Isuzu ] [ Jaguar ] [ Jeep ] [ Kia ] [ Land Rover ] [ Lexus ] [ Lincoln ] [ Mazda ] [ Mercedes-Benz ] [ Mercury ] [ Mini ] [ Mitsubishi ] [ Nissan ] [ Oldsmobile ] [ Plymouth ] [ Pontiac ] [ Saab ] [ Saturn ] [ Scion ] [ Subaru ] [ Suzuki ] [ Toyota ] [ Volvo ] [ VW ]
| Ford Codes | ||
|---|---|---|
| Trouble Code | Fault Location | Probable Cause |
| P0171 | Fuel trim (FT) system too lean, bank 1 | Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector(s), HO2S |
| P0455 | Evaporative emission (EVAP) system -large leak detected | Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve | P1000 – P1099 (Fuel and air metering and auxiliary emission control) |
| P1000 | On Board Diagnostic System Readiness Test Not Complete | - |
| P1001 | Key On/Engine Running Not Able To Complete | - |
| P1039 | Vehicle Speed Signal Missing or Improper | |
| P1051 | Brake Switch Signal Missing or Improper | P1100 – P1199 (Fuel and air metering) |
| P1100 | Mass Air Flow Sensor Intermittent | Wiring, MAF sensor |
| P1101 | Mass Air Flow Sensor Out of Self-Test Range | Wiring, battery, MAF sensor, ECM |
| P1102 | Mass Air Flow Sensor In Range But Lower Than Expected | Wiring, MAF sensor, ECM |
| P1105 | Dual alternator upper -malfunction | Wiring, alternator, ECM |
| P1106 | Dual alternator lower -malfunction | Wiring, alternator, ECM |
| P1107 | Dual Alternator Lower Circuit Malfunction | Wiring, alternator, ECM |
| P1108 | Dual Alternator Battery Lamp Circuit Malfunction | Wiring, alternator (upper), alternator (lower), ECM |
| P1109 | IAT Sensor 2 Intermittent Condition | |
| P1111 | CAT System Fault | |
| P1112 | Intake Air Temperature Sensor Intermittent Condition | Wiring, IAT sensor, ECM |
| P1114 | Intake Air Temperature Sensor 2 Circuit Low | Wiring short circuit to ground, IAT sensor, ECM |
| P1115 | Intake Air Temperature Sensor 2 Circuit High | Wiring, IAT sensor, ECM |
| P1116 | Engine Coolant Temperature Sensor is Out of Self-Test Range | Wiring, cooling system fault, ECT sensor, CHTsensor, ECM |
| P1117 | Engine Coolant Temperature Sensor Intermittent | Wiring, cooling system fault, ECT sensor, CHT sensor, ECM |
| P1118 | Manifold Absolute Temperature Circuit Low Input | Wiring, IAT sensor, ECM |
| P1119 | Manifold Absolute Temperature Circuit High Input | Wiring, IAT sensor, ECM |
| P1120 | Throttle Position Sensor Out of Range | Wiring, TP sensor |
| P1121 | Throttle Position Sensor Inconsistent with Mass Air Flow Sensor | Wiring, MAF sensor, TP sensor, air leak |
| P1122 | Throttle Position Sensor Circuit Intermittent Low Voltage | |
| P1123 | Throttle Position Sensor Circuit Intermittent High Voltage | |
| P1124 | Throttle Position Sensor Out of Self-Test Range | Mechanical fault, TP sensor, ECM |
| P1125 | Throttle Position Sensor Intermittent | Wiring, TP sensor |
| P1127 | Exhaust Not Warm Enough Downstream O2 Sensor Not Tested | Engine not running long enough prior to self-test |
| P1128 | Front O2 Sensor Connectors Swapped | Wiring, connectors swapped |
| P1129 | Downstream Oxygen Sensors Swapped from Bank to Bank | Wiring, connectors swapped |
| P1130 | Lack of Upstream Heated Oxygen Sensor Switch Adaptive Fuel Limit Bank 1 | Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM |
| P1131 | Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1 | Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM |
| P1132 | Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1 | Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM |
| P1133 | Bank 1 Fuel Control Shifted Lean | |
| P1135 | Pedal Position Sensor 'A' Circuit Intermittent | |
| P1136 | Crankshaft Position Sensor And Or Camshaft Position Sensor Input Signal to PCM Concerns | |
| P1137 | Lack Of O2 Switches Bank 1 Sensor 2 Lean | Wiring, exhaust system leaking, H02S |
| P1138 | Lack Of HO2S Switches Bank 1 Sensor 2 Rich | Wiring, exhaust system leaking, H02S |
| P1139 | Water In Fuel Indicator Circuit Malfunction | Wiring, bulb open circuit, instrument panel, ECM |
| P1140 | Water In Fuel Condition | Wiring, fuel filter, fuel/water separator sensor,ECM |
| P1141 | Fuel Restriction Indicator Circuit Malfunction | |
| P1142 | Fuel Restriction Condition | |
| P1145 | Calculated Torque Error | |
| P1148 | Alternator 2 -circuit malfunction | Wiring, alternator, ECM |
| P1149 | Alternator 2 -high input | Wiring, alternator, ECM |
| P1150 | Lack of Upstream Heated Oxygen Sensor Switch Adaptive Fuel Limit Bank 2 | Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM |
| P1151 | Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2 | Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM |
| P1152 | Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2 | Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM |
| P1153 | Bank 2 Fuel Control Shifted Lean | |
| P1154 | Bank 2 Fuel Control Shifted Rich | |
| P1155 | Alternative Fuel Controller | |
| P1156 | Fuel Selector Switch Circuit | Wiring, fuel injector control module, ECM |
| P1157 | Lack of O2 Switches Bank 2 Sensor 2 Indicates Lean | Wiring, exhaust system leaking, H02S |
| P1158 | Lack of O2 Switches Bank 2 Sensor 2 Indicates Lean | |
| P115E | Engine control module (ECM) -data transmission fault | Throttle position (TP), wiring, ECM |
| P1168 | Fuel Rail Pressure Sensor Condition Low Pressure | Wiring, fuel level, low fuel pressure, fuel rail pressure sensor |
| P1169 | Fuel Rail Sensor In-Range High Failure | Wiring, high fuel pressure, fuel rail pressure sensor |
| P1170 | Engine Shut Off Solenoid Fault | |
| P1171 | Rotor Sensor Fault | |
| P1172 | Rotor Control Fault | |
| P1173 | Rotor Calibration Fault | |
| P1174 | Cam Sensor Fault | |
| P1175 | Cam Control Fault | |
| P1176 | Cam Calibration Fault | |
| P1177 | Synchronization Fault | |
| P117A | Engine control module (ECM) -engine oil temperature | Engine overheated, wiring, ECM |
| P1180 | Fuel Delivery System Malfunction Low | |
| P1181 | Fuel Delivery System Malfunction High | |
| P1183 | Engine Oil Temperature Sensor Circuit Malfunction | |
| P1184 | Engine Oil Temperature Out Of Self Test Range | Wiring, EOT sensor, ECM |
| P1185 | FTS High Fuel Pump Temperature Sensor High | |
| P1186 | Fuel Pump Temperature Sensor Low | |
| P1187 | Variant Selection | |
| P1188 | Calibration Memory Fault | |
| P1189 | Pump Speed Signal Fault | |
| P1190 | Calibration Resistor Out Of Range | |
| P1191 | Key Line Voltage | |
| P1192 | Voltage External | |
| P1193 | EGR Drive Overcurrent | |
| P1194 | Engine Control Unit A/D Converter | |
| P1195 | SCP HBCC Failed To Initialize | |
| P1196 | Key Off Voltage High | |
| P1197 | Key Off Voltage Low | |
| P1198 | Pump Rotor Control Underfueling | |
| P1209 | Injector Control Pressure System Fault | Oil quality, oil level, oil pressure too high/low, low fuel pressure, fuel pressure regulator control solenoid |
| P1210 | Injector Control Pressure Above Expected Level | Wiring, fuel pressure sensor, ECM |
| P1211 | Injector Control Pressure Sensor Above / Below Desired | Oil quality, oil level, oil pressure too highllow, low fuel pressure, fuel pressure regulator control solenoid |
| P1212 | Injector Control Pressure Not Detected During Crank | Oil quality, oil level, oil pressure too highllow, low fuel pressure, fuel pressure sensor, fuel pressure regulator |
| P1213 | Start Injector Circuit Malfunction | |
| P1214 | Pedal Position Sensor 'B' Circuit Intermittent | |
| P1215 | Pedal Position Sensor 'C' Circuit Low Input | |
| P1216 | Pedal Position Sensor 'C' Circuit High Input | |
| P1217 | Pedal Position Sensor 'C' Circuit Intermittent | |
| P1218 | CID High | Injector control module, ECM |
| P1219 | CID Stuck Low | Injector control module, ECM |
| P1220 | Series Throttle Control Fault Detected | |
| P1221 | Traction Control System Malfunction | |
| P1222 | Traction Control Output Circuit Malfunction | |
| P1223 | Pedal Demand Sensor B Circuit High Input | |
| P1224 | Throttle Position Sensor 'B' Out of Self-Test Range | |
| P1227 | Wastegate Failed Closed Over Pressure | EGR valve, MAF sensor, SC wastegate actuator, SC |
| P1228 | Wastegate Failed Open Under Pressure | EGR valve, MAF sensor, SC wastegate actuator,SC |
| P1229 | Supercharger Intercooler Pump Not Operating Condition | Wiring, SC intercooler pump, SC intercooler pump relay, ECM |
| P1230 | Low Speed Fuel Pump Fault Condition | |
| P1231 | High Speed Fuel Pump Relay Activated | |
| P1232 | Low Speed Fuel Pump Primary Circuit Failure | Wiring, low speed fuel pump relay, ECM |
| P1233 | Fuel Pump Driver Module Disabled Or Off Line | Wiring, IFS switch, fuel pump, fuel pump control module, ECM |
| P1234 | Fuel Pump Driver Module Disabled Or Off Line | Wiring, IFS switch, fuel pump, fuel pump control module, ECM |
| P1235 | Fuel Pump Control Out of Range | Wiring, fuel pump, fuel pump control module, ECM |
| P1236 | Fuel Pump Control Out of Range | Wiring, fuel pump, fuel pump control module, ECM |
| P1237 | Fuel Pump Secondary Circuit Fault | Wiring, fuel pump, fuel pump relay, fuel pump control module |
| P1238 | Fuel Pump Secondary Circuit Fault | Wiring, fuel pump, fuel pump relay, fuel pump control module |
| P1239 | Speed Fuel Pump Positive Feed Fault | |
| P1243 | Second Fuel Pump Faulty or Ground Fault | |
| P1244 | Alternator Load Input Failed High | Wiring, alternator, ECM |
| P1245 | Alternator Load Input Failed Low | Wiring, drive belt, alternator, ECM |
| P1246 | Alternator Load Input Failed | Wiring, alternator, drive belt, ECM |
| P1247 | Turbo Boost Pressure Low | Wiring, hoses, MAP sensor, ECM |
| P1248 | Turbo Boost Pressure Not Detected | Wiring, hoses, MAP sensor, ECM |
| P1249 | Wastegate Control Valve Performance | Wiring, hoses, TC wastegate regulating valve, TC wastegate actuator, ECM |
| P1250 | Lack Of Power To Fuel Pressure Regulator Control Solenoid | |
| P1252 | Fuel Pressure Control Solenoid Valve 2 Malfunction | |
| P1253 | Pedal Correlation PDS1 and LPDS Low | |
| P1254 | Pedal Correlation PDS2 and LPDS High | |
| P1255 | Pedal Correlation PDS2 and LPDS Low | |
| P1256 | Pedal Correlation PDS1 and HPDS | |
| P1257 | Pedal Correlation PDS2 and HPDS | |
| P1258 | Pedal Correlation PDS1 and PDS2 | |
| P1260 | Theft Detected - Vehicle Immobilized | |
| P1261 | Cylinder #1 High To Low Side Short | Wiring short circuit |
| P1262 | Cylinder #2 High To Low Side Short | Wiring short circuit |
| P1263 | Cylinder #3 High To Low Side Short | Wiring short circuit |
| P1264 | Cylinder #4 High To Low Side Short | Wiring short circuit |
| P1265 | Cylinder #5 High To Low Side Short | Wiring short circuit |
| P1266 | Cylinder #6 High To Low Side Short | Wiring short circuit |
| P1267 | Cylinder #7 High To Low Side Short | Wiring short circuit |
| P1268 | Cylinder #8 High To Low Side Short | Wiring short circuit |
| P1270 | Engine RPM Or Speed Limiter Reached | Engine over revved in neutral, wheel slippage |
| P1271 | Cylinder #1 High To Low Side Open | Wiring open circuit |
| P1272 | Cylinder #2 High To Low Side Open | Wiring open circuit |
| P1273 | Cylinder #3 High To Low Side Open | Wiring open circuit |
| P1274 | Cylinder #4 High To Low Side Open | Wiring open circuit |
| P1275 | Cylinder #5 High To Low Side Open | Wiring open circuit |
| P1276 | Cylinder #6 High To Low Side Open | Wiring open circuit |
| P1277 | Cylinder #7 High To Low Side Open | Wiring open circuit |
| P1278 | Cylinder #8 High To Low Side Open | Wiring open circuit |
| P1280 | Injection Control Pressure Out Of Range Low | |
| P1281 | Injection Control Pressure Out Of Range High | |
| P1282 | Excessive Injection Control Pressure | Wiring, fuel pressure regulator control solenoid |
| P1283 | Fuel pressure regulator control solenoid -circuit malfunction | Wiring open circuit/short circuit to positive |
| P1284 | Self-test not complete -fuel pressure sensor failure | Wiring, fuel pressure sensor, ECM |
| P1285 | Cylinder Head Over Temperature Condition | Wiring, cooling system fault, CHT sensor |
| P1286 | Fuel Pulse In Range But Lower Than Expected | |
| P1287 | Fuel Pulse In Range But Higher Than Expected | |
| P1288 | Cylinder Head Temperature Sensor Out of Self-Test Range | Wiring, cooling system fault, CHT sensor |
| P1289 | Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range | Wiring, cooling system fault, CHT sensor |
| P128A | Engine control module (ECM)/cylinder head temperature (CHT) sensor -high input | Wiring, CHT sensor, ECM |
| P1290 | Cylinder Head Temperature Sensor Signal Less Than Self-Test Range | Wiring, cooling system fault, CHT sensor |
| P1291 | Injector High Side Short To GND Or VBATT Bank 1 | High side short circuit to ground/positive, injector(s), injector control module |
| P1292 | Injector High Side Short To GND Or VBATT - Bank 2 | High side short circuit to ground/positive, injector(s), injector control module |
| P1293 | High Side Open Bank No. 1 | High side open circuit, injector(s), injector control module |
| P1294 | High Side Open Bank No. 2 | High side open circuit, injector(s), injector control module |
| P1295 | Multi-Faults Bank 1 With Low Side Shorts | Wiring short circuit to ground, injector control module |
| P1296 | Multi-Faults Bank 2 With Low Side Shorts | Wiring short circuit to ground, injector control module |
| P1297 | Injector High Sides Shorted Together | Wiring short circuit, injector control module |
| P1298 | Injector control module -internal fault | Injector control module |
| P1299 | Cylinder Head Temperature Sensor Detected Engine Overheating Condition | Wiring, cooling system fault, CHT sensor | P1300 – P1399 (Ignition system or misfire) |
| P1300 | Boost Pressure Malfunction | |
| P1301 | Boost Pressure Pressure High | |
| P1302 | Boost Pressure Pressure Low | |
| P1303 | EGR Calibration Fault | |
| P1304 | EGR Calibration High | |
| P1305 | EGR Calibration Low | |
| P1306 | Kickdown Relay Pull In Circuit Fault | |
| P1307 | Kickdown Relay Hold Circuit Fault | |
| P1308 | A/C Clutch Circuit Fault | |
| P1309 | Misfire Detection Monitor Not enabled | CMP sensor, CKP sensor, ECT sensor, MAF sensor, ECM |
| P1316 | Ignition Driver Monitor Codes Detected | Wiring, injector control module, ECM |
| P1317 | Ignition Driver Monitor Codes Not Updated | |
| P1330 | Injector Control Pressure | |
| P1331 | Turbocharger / Supercharger Boost Pressure Control Open Circuit | |
| P1332 | Turbocharger / Supercharger Boost Pressure Control Circuit Low | |
| P1334 | Exhaust gas recirculation (EGR)/throttle position sensor -range/performance problem | Wiring, EGRlthrottle position sensor, ECM |
| P1335 | EGR Position Sensor Minimum Stop Performance | Hose leak/blockage, wiring, EGR valve position sensor, ECM |
| P1336 | Crankshaft Position Or Camshaft Position Sensor Input Signal Error | Wiring, CMP sensor, CKP sensor, ECM |
| P1340 | Camshaft Position Sensor 'B' Circuit Malfunction | |
| P1349 | Fuel Level Sensor 'B' Circuit High Input | |
| P1351 | Ignition Diagnostic Monitor Circuit Input Fault | |
| P1352 | Ignition Coil 'A' Primary Circuit | |
| P1353 | Ignition Coil 'B' Primary Circuit | |
| P1354 | Ignition Coil 'C' Primary Circuit | |
| P1355 | Ignition Coil 'D' Primary Circuit | |
| P1356 | Loss Of Ignition Diagnostic Module Input To PCM | |
| P1357 | Ignition Diagnostic Monitor Pulsewidth Not Defined | |
| P1358 | Ignition Diagnostic Monitor Signal Out of Self-Test Range | |
| P1359 | Spark Output Circuit Fault | |
| P1360 | Ignition Coil 'A' Secondary Circuit Malfunction | |
| P1361 | Ignition Coil 'B' Secondary Circuit Malfunction | |
| P1362 | Ignition Coil 'C' Secondary Circuit Malfunction | |
| P1363 | Ignition Coil 'D' Secondary Circuit Malfunction | |
| P1364 | Ignition Coil Primary Circuit Fault | |
| P1365 | Ignition Coil Secondary Circuit Failure | |
| P1369 | Engine Temperature Light Monitor Failure | |
| P1378 | Fuel Injection Control Module Circuit Low Voltage | Fuse, wiring, FICM relay |
| P1379 | Fuel Injection Control Module Circuit High Voltage | Wiring, alternator, ECM |
| P1380 | Variable Cam Timing Solenoid 'A' Circuit Condition | Wiring, CMP actuator, ECM |
| P1381 | Variable Cam Timing Over Advance Bank 1 | Wiring, timing belt/chain, CMP actuator, low oil pressure |
| P1383 | Variable Cam Timing Over Retarded Bank 1 | Wiring, timing belt/chain, CMP actuator |
| P1385 | Variable Cam Timing Solenoid 'B' Malfunction | Wiring, CMP actuator, ECM |
| P1386 | Variable Cam Timing Over Advance Bank 2 | Wiring, timing belt/chain, CMP actuator, low oil pressure |
| P1388 | Variable Cam Timing Over Retarded Bank 2 | Wiring, timing belt/chain, CMP actuator |
| P1389 | Glow Plug Circuit High Side Low Input | |
| P138B | Glow Plug Control Module System Voltage | |
| P1390 | Octane Adjust Out of Self-Test Range | |
| P1391 | Glow Plug Circuit Low Input Bank 1 | |
| P1392 | Glow Plug Circuit High Input Bank 1 | |
| P1393 | Glow Plug Circuit Low Input Bank 2 | |
| P1394 | Glow Plug Circuit High Input Bank 2 | |
| P1395 | Glow Plug Monitor Fault Bank 1 | |
| P1396 | Glow Plug Monitor Fault Bank 2 | |
| P1397 | System Voltage Out Of Self Test Range | Wiring, battery, alternator |
| P1399 | Glow Plug Circuit High Side High Input | P1400 – P1499 (Emission control) |
| P1400 | Differential Pressure Feedback Electronic Sensor Circuit Low Voltage | Wiring, EGR pressure sensor, ECM |
| P1401 | DPFE Sensor Circuit High | Wiring, EGR pressure sensor, ECM |
| P1402 | EGR Metering Orifice Restricted | |
| P1403 | Differential Pressure Feedback Electronic Sensor Hoses Reversed | |
| P1404 | EGR Valve Stuck Closed | |
| P1405 | DPF EGR Sensor Circuit High Voltage Detected | EGR hoses |
| P1406 | DPFE Sensor Circuit Downstream Hose | EGR hoses |
| P1407 | Exhaust Gas Recirculation Flow Out Of Self-Test Range | |
| P1408 | EGR Flow Out Of Self-Test Range | Wiring, EGR hoses, EGR valve, EGR solenoid,ECM |
| P1409 | EGR Vacuum Regulator Solenoid Circuit Malfunction | Wiring, EGR solenoid, ECM |
| P1410 | EGR Barometric Pressure Sensor VREF Voltage | |
| P1411 | Secondary Air Injection Downstream Flow | AIR hoses, AIR pump, AIR solenoid |
| P1413 | Secondary Air Injection System Monitor Circuit Low Voltage | Wiring, AIR solenoid, AIR pump, ECM |
| P1414 | Secondary Air Injection System Monitor Circuit High Voltage | Wiring, AIR solenoid, ECM |
| P1420 | Catalyst Temperature Sensor | |
| P1421 | Catalyst Damage | |
| P1422 | Exhaust Gas Ignition Temperature Sensor | |
| P1431 | Misfire Monitor Disabled Unable to Learn Trigger Wheel Profile | |
| P1432 | Thermostat Heater Control Circuit Failure | Wiring, engine thermostat heater, ECM |
| P1433 | A/C Refrigerant Temperature Circuit Low | |
| P1434 | A/C Refrigerant Temperature Circuit High | |
| P1435 | A/C Refrigerant Temperature Circuit Range/Performance | |
| P1436 | A/C Evaporator Air Temperature Circuit Low | Wiring, AlC evaporator temperature sensor, ECM |
| P1437 | A/C Evaporator Air Temperature Circuit High | Wiring, AlC evaporator temperature sensor, ECM |
| P1438 | A/C Evaporator Air Temperature Circuit Range/Performance | |
| P1442 | EVAP System Small Leak Detected | |
| P1443 | EVAP Control System Purge Control Solenoid or Purge Control Valve Fault | Wiring, EVAP system hoses, EVAP canister,EVAP canister purge valve |
| P1444 | Purge Flow Sensor Circuit Input Low | |
| P1445 | Purge Flow Sensor Circuit High Condition | |
| P1449 | EVAP System Unable To Hold Vacuum | |
| P1450 | Unable to Bleed Up Bleed Fuel Tank Vacuum | Wiring, EVAP system hoses, EVAP canister purge valve, fuel filler cap blocked |
| P1451 | EVAP Control System Canister Vent Solenoid Circuit Malfunction | Wiring, EVAP canister purge valve, ECM |
| P1452 | Unable To Bleed Up Fuel Tank Vacuum | |
| P1455 | Exhaust Gas Temperature Sensor 1 Range/Performance | |
| P1457 | Unable To Pull Vacuum In Tank | |
| P145E | Positive crankcase ventilation (PCV) heatercircuit malfunction | Wiring, PCV valve |
| P1460 | Wide Open Throttle Air Conditioning Cutoff Circuit Malfunction | Wiring, WOT relay, ECM |
| P1461 | Air Conditioning Pressure Sensor Circuit High | Wiring, AlC refrigerant pressure sensor, ECM |
| P1462 | Air Conditioning Pressure Sensor Circuit Low | Wiring, AlC refrigerant pressure sensor, ECM |
| P1463 | Air Conditioning Pressure Sensor Insufficient Pressure Change | Wiring, AlC system -mechanical fault, AlC refrigerant pressure sensor, AlC compressor clutch |
| P1464 | Air Conditioning Demand Out Of Self Test Range | Wiring, AlC ON -during self-test, WOT relay (AlC cut-out), ECM |
| P1465 | Air Conditioning Relay Circuit Malfunction | |
| P1466 | A/C Refrigerant Temperature Sensor/Circuit Malfunction | |
| P1469 | Low Air Conditioning Cycling Period | Wiring, AlC system -mechanical fault |
| P1473 | Fan Secondary High With Fans Off | |
| P1474 | Low Fan Control Primary Circuit | Wiring, engine coolant blower motor relay, ECM |
| P1477 | Medium Cooling Fan Control Primary Circuit Failure | Wiring, engine coolant blower motor relay, ECM |
| P1479 | High Fan Control Primary Circuit | Wiring, engine coolant blower motor relay, ECM |
| P1480 | Fan Secondary Low With Low Fans On | |
| P1481 | Fan Secondary Low Eith High Fans On | |
| P1482 | SCP | |
| P1483 | Power to Cooling Fan Exceeded Normal Draw | |
| P1484 | Open Power Ground To Variable Load Control Module | |
| P1485 | Engine Gas Recirculation Valve Circuit Malfunction | |
| P1487 | EGR Check Solenoid Circuit Failure | |
| P1489 | PCV Heater Control Circuit Fault | Wiring, crankcase breather heater | P1500 – P1599 (Vehicle or idle speed control) |
| P1500 | Vehicle Speed Sensor | Wiring, VSS, ECM |
| P1501 | Vehicle Speed Sensor Out Of Self Test Range | Electro-magnetic interference |
| P1502 | Vehicle Speed Sensor Intermittent | Wiring, VSS/ABS wheel speed sensors |
| P1504 | Intake Air Control Circuit Malfunction | Wiring, lAC valve, ECM |
| P1505 | Idle Air Control System at Adaptive Clip | |
| P1506 | Idle Air Control Overspeed Error | Wiring, lAC valve, vacuum leaks, ECM |
| P1507 | Idle Air Control Under Speed Error | Wiring, lAC valve, hose blocked, ECM |
| P1512 | Intake Manifold Runner Control Input Error Bank 1 | Wiring, mechanical fault, ECM |
| P1513 | Intake Manifold Runner Control Stuck Closed Bank 2 | Wiring, mechanical fault, ECM |
| P1516 | Intake Manifold Runner Control Input Error Bank 1 | Wiring, mechanical fault |
| P1517 | Intake Manifold Runner Control Input Error Bank 2 | Wiring, mechanical fault |
| P1518 | Intake Manifold Runner Control Fault Stuck Open | Wiring, IMRC actuator, ECM |
| P1519 | Intake Manifold Runner Control Fault Stuck Closed | Wiring, IMRC actuator, ECM |
| P151A | Intake manifold runner control (IMRC) module -malfunction | Wiring, IMRC actuator, ECM |
| P1520 | Intake Manifold Runner Control Circuit Fault | Wiring, mechanical fault, vacuum hoses, IMRC actuator, ECM |
| P1530 | Open or Short to A/C Compressor Clutch Circuit | |
| P1531 | Invalid Test Accelerator Pedal Movement | |
| P1532 | Intake Manifold Communication Control Circuit Bank 2 | |
| P1533 | AAI Circuit Malfunction | |
| P1534 | Inertia Switch Activated | |
| P1536 | Parking Brake Switch Circuit Failure | Wiring short circuit to ground/positive, wiring open circuit, low brake fluid |
| P1537 | Intake Manifold Runner Control Stuck Open Bank 1 | Wiring, hoses blocked, mechanical fault, ECM |
| P1538 | Intake Manifold Runner Control Stuck Open Bank 2 | Wiring, hoses blocked, mechanical fault, ECM |
| P1539 | Power to A/C Compressor Clutch Circuit Exceeded Normal Current Draw | |
| P1548 | Engine Air Filter Restriction | |
| P1549 | Intake Manifold Communication Control Circuit Malfunction | Wiring, intake manifold air control solenoid, ECM |
| P1550 | Power Steering Pressure Sensor Malfunction | Wiring, PSP sensor, ECM |
| P1561 | Brake Line Pressure Sensor Circuit | |
| P1565 | Speed Control Command Switch Out of Range High | Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS |
| P1566 | Speed Control Command Switch Out of Range Low | Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS |
| P1567 | Speed Control Output Circuit Continuity | Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS |
| P1568 | Speed Control Unable To Hold Speed | Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS |
| P1572 | Brake Pedal Switch Circuit Malfunction | Wiring, BPP switch, brake fluid pressure (BFP) switch, ECM |
| P1573 | Throttle Position Not Available | |
| P1574 | Stop Lamp Switch Circuit | |
| P1575 | Pedal Position Out of Self Test Range | |
| P1576 | Accelerator Pedal Position Sensor Signal Malfunction | |
| P1577 | Pedal Position Sensor Disagreement | |
| P1578 | ETC Power Less Than Demand | |
| P1579 | Electronic Throttle Control In Power Limiting Mode | |
| P1580 | Electronic Throttle Monitor PCM Override | |
| P1581 | Electronic Throttle Monitor Malfunction | |
| P1582 | Electronic Throttle Monitor Data Available | Airbag deployment |
| P1583 | Electronic Throttle Monitor Cruise Disable | |
| P1584 | Throttle Control Unit Input Circuit Malfunction | |
| P1585 | Throttle Control Unit Malfunction | |
| P1586 | Throttle Control Unit Throttle Position Malfunction | |
| P1587 | Throttle Control Unit Modulated Command Malfunction | |
| P1588 | Throttle Control Unit Detected Loss of Return Spring | |
| P1589 | Throttle Control Unit Unable To Control Desired Throttle Angle | P1600 – P1699 (ECM – computer output circuit) |
| P1600 | Loss of KAM Power Open Circuit | |
| P1605 | PCM Keep Alive Memory Test Error Conditions | Wiring, battery terminal corrosion, loose battery connection, ECM |
| P1608 | Watchdog Malfunction | |
| P1610 | Engine control module (ECM) | Incorrect programming |
| P1611 | Engine control module (ECM) | Incorrect programming |
| P1615 | Engine control module (ECM) | Incorrect programming |
| P1616 | Engine control module (ECM) | Incorrect programming |
| P1617 | Engine control module (ECM) | Incorrect programming |
| P1618 | Engine control module (ECM) | Incorrect programming |
| P1625 | Voltage to Vehicle Load Control Module Fan Circuit Not detected | |
| P1626 | Voltage to Vehicle Load Control Module Circuit Not detected | |
| P1633 | Keep Alive Power Voltage Too Low | Wiring, ECM |
| P1634 | Data Output Link Circuit Failure | |
| P1635 | Tire / Axle Ratio Out of Acceptable Range | Incorrect tire size, incorrect axle ratio, incorrect vehicle 10 configuration |
| P1636 | Inductive Signature Chip Communication Error | ECM |
| P1639 | Vehicle ID Block Corrupted or Not Programmed | Incorrect vehicle 10 configuration, ECM |
| P1640 | Powertrain DTCs Available in Another Module | P-codes stored in another control module |
| P1641 | Fuel Pump Driver Module Fault Conditions | Wiring, fuel pump relay, fuel pump, ECM |
| P1642 | Fuel Pump Monitor Circuit High Input | |
| P1643 | Fuel Pump Monitor Circuit Low Input | |
| P1644 | Fuel Pump Speed Control Circuit Malfunction | |
| P1646 | Linear O2 Sensor Control Chip Bank 1 | Non OEM accessories, ECM programming, ECM |
| P1647 | Linear O2 Sensor Control Chip Bank 2 | Non OEM accessories, ECM programming, ECM |
| P1650 | Power Steering Pressure Switch Out of Self-Test Range | Wiring, PSP switch, steering wheel turned during self-test, ECM |
| P1651 | Power Steering Pressure Switch Input Malfunction | Wiring, vehicle towed with engine running, PSP switch, OTC not erased, ECM |
| P1656 | CAN Link PCM Circuit Network | |
| P1657 | Skip Shift 1 To 4 Upshift System Control Circuit | |
| P1660 | Output Circuit Check Signal High | |
| P1661 | Output Circuit Check Signal Low | |
| P1662 | Injector control module relay -circuit malfunction | Wiring, fuses, injector control module relay |
| P1663 | Fuel Demand Command Signal Circuit Malfunction | Wiring open circuit/short circuit to ground, injector control module, ECM |
| P1664 | Injection Pump Control Module Faulty | |
| P1667 | Cylinder identification -circuit malfunction | Wiring open circuit/short circuit to ground, injector control module relay, injector control module,ECM |
| P1668 | Engine control module (ECM)/injector control module -communication error | Wiring open circuit/short circuit to ground, injector control module relay, injector control module,ECM |
| P1670 | Electronic Feedback Signal Not Detected | Wiring open circuit/short circuit to ground, injector control module relay, injector control module, ECM |
| P1674 | Control Module Software Corrupted | Wiring, software incompatibility, ECM |
| P1690 | Wastegate Solenoid Circuit Malfunction | Wiring open circuit/short circuit to ground, turbocharger (TC) wastegate control solenoid,ECM | P1700 – P1799 (Transmission) |
| P1700 | Transmission System Problems | |
| P1701 | Reverse Engagement Error Conditions | |
| P1702 | Transmission range (TR) sensor -circuit intermittent | Incorrect adjustment, wiring, TR sensor |
| P1703 | Brake On/Off Switch Out of Self-Test Range | Wiring, brake pedal depressed during self-test, rear electronic module/lights control module, BPP switch, ECM |
| P1704 | Transmission System Conditions | Incorrect adjustment, wiring, TR sensor |
| P1705 | Manual Lever Position Sensor Out of Self-Test Range | Wiring, TR sensor |
| P1706 | High Vehicle Speed Observed in Park | |
| P1707 | Transfer Case Neutral Indicator Hard Fault Present | |
| P1709 | Park or Neutral Position Switch Out of Self-Test Range | Wiring, PNP switch/CPP switch, ECM |
| P1710 | No Change In Transmission Fluid Temperature Signal | |
| P1711 | Transmission Fluid Temperature Sensor Out of Self-Test Range | Transmission not at normal operating temperature -repeat test |
| P1712 | Trans Torque Reduction Request Signal Malfunction | |
| P1713 | Transmission System Conditions | Wiring, TFT sensor |
| P1714 | Shift Solenoid 'A' Fault | Wiring, SS, ECM/TCM |
| P1715 | Shift Solenoid 'B' Fault | Wiring, SS, ECM/TCM |
| P1716 | Transmission System Conditions | |
| P1717 | Transmission System Conditions | |
| P1718 | Transmission System Conditions | Wiring, TFT sensor |
| P1719 | Steering Sensor High Input | |
| P1720 | Vehicle Speed Meter Circuit Malfunction | |
| P1721 | Gear 1 Incorrect Ratio | |
| P1722 | Gear 2 Incorrect Ratio | |
| P1723 | Gear 3 Incorrect Ratio | |
| P1724 | Gear 4 Incorrect Ratio | |
| P1725 | Insufficient Engine Speed Increase During Self Test | Repeat test |
| P1726 | Insufficient Engine Speed Decrease During Self Test | Repeat test |
| P1727 | Transmission Slip Fault Conditions | |
| P1728 | Transmission Slip Error | TCC |
| P1729 | 4x4 Low Switch Error | Wiring, four wheel drive shift control module, ECM |
| P1731 | 1-2 Shift Malfunction | |
| P1732 | Engine Overspeed Malfunction | |
| P1733 | Gearshift Load Control Malfunction | |
| P1740 | Transmission System Conditions | Wiring, TCC solenoid, ECM/TCM |
| P1741 | Torque Converter Clutch Control Error | |
| P1742 | Torque Converter Clutch Solenoid Failed On Conditions | |
| P1743 | Torque Converter Clutch Solenoid Failed On Conditions | |
| P1744 | Torque Converter Clutch System Stuck in Off Position | Wiring, TCC, TCM |
| P1745 | Line Pressure Too High For Too Long | |
| P1746 | Electronic Pressure Control Solenoid Low Conditions | Wiring, TFP solenoid, TCM, ECM |
| P1747 | Electronic Pressure Control Solenoid 'A' Short Circuit | Wiring, TFP solenoid, ECM |
| P1748 | Electronic Pressure Control Malfunction | |
| P1749 | Electronic Pressure Control Solenoid Failed Low Conditions | |
| P1751 | Shift Solenoid 1 Performance Conditions | |
| P1754 | Coast Clutch Solenoid Circuit Malfunction | Wiring, coast clutch solenoid |
| P1756 | Shift Solenoid 2 Performance Conditions | |
| P1760 | Transmission System Fault Conditions | Wiring, TFP solenoid, TCM |
| P1761 | Shift Solenoid 3 Performance Conditions | |
| P1762 | Overdrive Band Failed Off | |
| P1766 | Shift Solenoid 'D' Performance | |
| P1767 | Torque Converter Clutch Solenoid Circuit Malfunction | |
| P1768 | Performance / Normal / Winter Mode Input Malfunction | |
| P1770 | Overrun Clutch Solenoid Valve Malfunction | |
| P1771 | Throttle Position Sensor Open Circuit | |
| P1772 | Throttle Position Sensor Short Circuit | |
| P1779 | Transmission Control Indicator Lamp Circuit Malfunction | |
| P1780 | Transmission Control Switch Circuit is Out of Self-Test Range | Wiring, transmission control switch, ECM |
| P1781 | 4x4 Low Switch Out of Self-Test Range Conditions | Wiring, four wheel drive shift control module, 4x4L switch, ECM |
| P1782 | P/ES Circuit Out Of Self Test Range | |
| P1783 | Transmission Over-Temperature Condition | Wiring, TFT sensor, TCM, ECM |
| P1784 | Transmission System First or Reverse Gear Fault Conditions | |
| P1785 | Transmission System First or Second Gear Fault Conditions | |
| P1786 | Transmission System Second or Third Gear Fault | |
| P1787 | Transmission System Third or Fourth Gear Fault | |
| P1788 | 3-2 Timing/Coast Clutch Solenoid Circuit Open Conditions | |
| P1789 | 3-2 Timing/Coast Clutch Solenoid Circuit Shorted Conditions | |
| P1793 | Ignition Supply Malfunction | |
| P1795 | Idle Switch Circuit Malfunction | |
| P1797 | Park/Neutral Position Switch Signal Malfunction | |
| P1804 | Transmission 4-Wheel Drive High Indicator Circuit Failure | |
| P1806 | Transmission 4-Wheel Drive High Indicator Short Circuit To Battery | |
| P1807 | Transmission 4-Wheel Drive High Indicator Short Circuit To Ground | |
| P1808 | Transmission 4-Wheel Drive Low Indicator Circuit Failure | |
| P1809 | Transmission 4-Wheel Drive Low Indicator Open Circuit | |
| P1810 | Transmission Fluid Pressure Valve Position Switch Circuit | |
| P1812 | Transmission 4-Wheel Drive Mode Select Circuit Failure | |
| P1815 | Transmission 4-Wheel Drive Mode Select Short Circuit To Ground | |
| P1819 | Transmission Neutral Safety Switch Short Circuit To Ground | |
| P1820 | Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure | |
| P1822 | Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery | |
| P1824 | Transmission 4-Wheel Drive Clutch Relay Circuit Failure | |
| P1826 | Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery | |
| P1827 | Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground | |
| P1828 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure | |
| P1829 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit | |
| P1830 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery | |
| P1832 | Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure | |
| P1834 | Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery | |
| P1838 | Transmission Transfer Case Shift Motor Circuit Failure | |
| P1839 | Transmission Transfer Case Shift Motor Open Circuit | |
| P1840 | Transmission Transfer Case Shift Motor Short Circuit To Battery | |
| P1846 | Transmission Transfer Case Contact Plate 'A' Circuit Failure | |
| P1848 | Transmission Transfer Case Contact Plate 'A' Short Circuit To Battery | |
| P1849 | Transmission Transfer Case Contact Plate 'A' Short Circuit To Ground | |
| P1850 | Transmission Transfer Case Contact Plate 'B' Circuit Failure | |
| P1854 | Transmission Transfer Case Contact Plate 'C' Circuit Failure | |
| P1855 | Transmission Transfer Case Contact Plate 'C' Open Circuit | |
| P1856 | Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery | |
| P1857 | Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground | |
| P1858 | Transmission Transfer Case Contact Plate 'D' Circuit Failure | |
| P1859 | Transmission Transfer Case Contact Plate 'D' Open Circuit | |
| P1861 | Transmission Transfer Case Contact Plate 'D' Short Circuit To Ground | |
| P1862 | Transmission Transfer Case Contact Plate Power Circuit Failure | |
| P1863 | Transmission Transfer Case Contact Plate Power Open Circuit | |
| P1865 | Transmission Transfer Case Contact Plate Power Short To Ground | |
| P1866 | Transmission Transfer Case System Concern Servicing Required | |
| P1867 | Transmission Transfer Case Contact Plate General Circuit Failure | |
| P1869 | Lamp Air Bag Warning Indicator Circuit Open or Short to Ground | |
| P1876 | Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure | |
| P1877 | Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery | |
| P1878 | Transmission Transfer Case Disengaged Solenoid Circuit Failure | |
| P1881 | Engine Coolant Level Switch Circuit Failure | |
| P1882 | Engine Coolant Level Switch Circuit Short to Ground | |
| P1883 | Engine Coolant Level Switch Circuit Failure | |
| P1884 | Engine Coolant Level Lamp Circuit Short to Ground | |
| P1889 | Drive Train Axles Bearings Problem | |
| P1891 | Transmission Transfer Case Contact Plate Ground Return Open Circuit | P1900 – P1999 (Transmission) |
| P1900 | Output Shaft Speed Circuit Intermittent Malfunction | Wiring, poor connection, OSS sensor, ECMITCM |
| P1901 | Turbine Shaft Speed Sensor Circuit Intermittent | Wiring, poor connection, TSS sensor, ECMITCM |
| P1902 | Kickdown Solenoid Relay Control Circuit | |
| P1903 | Kickdown Solenoid Circuit Low Voltage | |
| P1904 | Kickdown Solenoid Circuit High Voltage | |
| P1908 | Transmission Pressure Circuit Solenoid Open or Short to Ground | |
| P1909 | Transmission Temperature Sensor Circuit Open or Shorted to Power Or Ground | |
| P1910 | Reversing lamps -circuit malfunction | Wiring, reverse gear position switch, ECM |
| P1919 | Engine Coolant Temperature Signal | |
| P1922 | Fuel Additive Level Circuit Malfunction | |
| P1924 | Fuel Additive Level Circuit Low | |
| P1925 | Fuel Additive Level Circuit High | |
| P1926 | Fuel Additive Level Circuit Range/Performance | |
| P1927 | Fuel Additive Level Too Low/Empty | |
| P1928 | Fuel Additive Level Pump Control Circuit/Open | |
| P1929 | Fuel Additive Level Pump Control Circuit Performance | |
| P1930 | Fuel Additive Level Too Low/Empty | |
| P1931 | Fuel Additive Pump Control Circuit/Open | |
| P1932 | Fuel Additive Pump Control Circuit Performance | |
| P1933 | Fuel Additive Pump Control Circuit Low | |
| P1934 | Fuel Additive Pump Control Circuit High | |
| P1935 | Fuel Additive Level Low | |
| P1936 | Fuel Level Signal | |
| P1937 | Vehicle Speed Signal | |
| P1938 | Brake Switch/Sensor Signal | |
| P1939 | Clutch Switch/Sensor Signal | |
| U2023 | Fault received from external node | |