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.

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Chevrolet Codes
Trouble CodeFault LocationProbable Cause
B1325Control Module Power Circuit Low/High Voltage
P0014Camshaft position (CMP) exhaust/right/rear, bank 1 -timing over -advanced/system performance
P0171System too lean, bank 1Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector(s), HO2S
P0174System too lean, bank 2PCV tube, EVAP Purge Valve, Air intake blockage, Intake leak
P0300Random/multiple cylinder(s) -misfire detectedSpark plug(s), HT lead(s), injector(s), ignition coil(s), low compression, wiring
P0430Catalyst System Low Efficiency Bank 2Broken manifold bolts, Unsealed air filter housing, Cat converter break-in procedure
P0442Evaporative Emission Control System Leak Detected Small LeakPurge valve, Chassis EVAP, Charcoal canister, Vent valve, Fuel tank leaks
P0446Evaporative Emission (EVAP) Vent Control Circuit Malfunction (Chevrolet)
P0455Evaporative emission (EVAP) system -large leak detectedHose connection(s), intake leak, EVAP canister, EVAP canister purge valve
P0496Evaporative Emission System Flow During Non-PurgeCharcoal canister, Camshaft cover leak, Purge Valve, Fuel tank cap
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1011Intake camshaft position (CMP) actuator, bank 1 -incorrect park positionEngine oil level/pressure, mechanical fault
P1012Exhaust camshaft position (CMP) actuator, bank 1-incorrect park positionEngine oil level/pressure, mechanical fault
P1013Intake Camshaft Position Actuator Park Position Bank 2
P1014Exhaust camshaft position (CMP) actuator, bank 2-incorrect park positionEngine oil level/pressure, mechanical fault
P1031HO2S Heater Current Monitor Control Circuit Banks 1 and 2 Sensor 1
P1032HO2S Heater Warm Up Control Circuit Banks 1 and 2 Sensor 1
P1093Fuel rail pressure (FRP) sensor, command/actualfuel pressure -signal variationWiring, poor connections, FRP sensor
P1094Fuel rail pressure (FRP) sensor -signal out ofrangeWiring, poor connections, FRP sensor
P1100 – P1199 (Fuel and air metering)
P1101Intake airflow -incorrectWiring, 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
P1105Secondary Vacuum Sensor Circuit
P1106Manifold absolute pressure (MAP) sensor voltage high, intermittentWiring open circuit/short circuit to positive, poorconnections
P1107Manifold absolute pressure (MAP) sensor voltage low, intermittentWiring short circuit to ground, poor connections
P1108Manifold absolute pressure (MAP) sensor voltage highWiring open circuit/short circuit to voltage, manifold absolute pressure (MAP) sensor, exhaust gas recirculation (EGR) valve, restricted exhaust system, ECM
P1109Secondary Port Throttle System
P1111Intake air temperature (IAT) sensor -voltage high, intermittentWiring open circuit/short to positive, poorconnections
P1112Intake air temperature (IAT) sensor -voltage low, intermittentWiring short circuit to ground
P1113Intake Resonance Switchover Solenoid Control Circuit
P1114Engine coolant temperature (ECT) sensor voltage low, intermittentWiring short circuit to ground, poor connections
P1115Engine coolant temperature (ECT) sensor voltage high, intermittentWiring open circuit/short to positive, poor connections
P1116Engine coolant temperature (EeT) sensor circuit malfunctionWiring, ECT sensor, ECM
P1117Engine Coolant Temperature Signal Out-Of-Range Low
P1118Engine Coolant Temp. Signal Out-Of-Range High
P1119Engine Coolant Temperature Signal Out Of Rage
P1120Throttle motor position sensor 1 -circuitmalfunctionWiring, throttle control module
P1121Throttle position (TP) sensor -voltage high, intermittentWiring open circuit/short to positive, poor connections
P1122Throttle position (TP) sensor -voltage low, intermittentWiring open circuit/short to ground, poor connections
P1125Accelerator pedal position (APP) sensor 1/2 signal malfunctionWiring, APP sensor, ECM
P1130HO2S Circuit Low Variance Bank 1 Sensor 1
P1131HO2S Circuit Low Variance Bank 1 Sensor 2
P1132Heated oxygen sensor (H02S) 1, bank 1 signal circuit shorted to heater circuitWiring, H02S, ECM
P1133Heated oxygen sensor (H02S) 1, bank 1 insufficient switchingWiring, exhaust system leaking, H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 -slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1135HO2S Lean Mean Bank 1 Sensor 1
P1136HO2S Rich Mean Bank 1 Sensor 1
P1137Heated oxygen sensor (H02S) 2, bank 1 voltage lowWiring, exhaust system leaking, H02S
P1138Heated oxygen sensor (H02S) 2, bank 1 voltage highWiring, H02S
P1139HO2S Insufficient Switching Bank 1 Sensor 2
P1140HO2S Transition Time Ratio Bank 1 Sensor 2
P1141HO2S Heater Control Circuit Bank 1 Sensor 2
P1143HO2S Bank 1 Sensor 3 Lean System or Low Voltage
P1144HO2S Bank 1 Sensor 3 Rich or High Voltage
P1145HO2S Cross Counts Bank 1 Sensor 3
P1152Heated oxygen sensor (H02S) 1, bank 2 signal circuit shorted to heater circuitWiring, H02S, ECM
P1153Heated oxygen sensor (H02S) 1, bank 2insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H025
P1154Heated oxygen sensor (H02S) 1, bank 2 slow responseWiring, oxygen sensor heater, exhaust system leaking, H025
P1155HO2S Lean Average Bank 2 Sensor 1
P1156HO2S Rich Average Bank 2 Sensor 1
P1157HO2S Bank 2 Sensor 2 Lean System Or Low Voltage
P1158Heated oxygen sensor (H02S) 2, bank 2 -not switching, fuel trim (FT) rich mixtureWiring, exhaust system leaking, H02S
P1159HO2S Cross Counts Bank 2 Sensor 2
P1161HO2S Heater Control Circuit Bank 2 Sensor 2
P1163HO2S Bank 2 Sensor 3 Lean System Or Low Voltage
P1164HO2S Bank 2 Sensor 3 Rich Or High Voltage
P1165HO2S Cross Counts Bank 2 Sensor 3
P1166Heated oxygen sensor (H02S) 2, bank 1 voltage lowWiring, exhaust system leaking, H025
P1170Bank To Bank Fuel TrimOffset
P1171Fuel system -lean during accelerationFuel filter, fuel pump, H02S, injectors
P1172Fuel level sensors, primary & secondary sensorno fuel level change during fuel transfer fromsecondary to primary tankWiring, fuel pump relays, secondary fuel pump, fuel level sensors, ECM
P1174Heated oxygen sensor (H02S) 1, bank 1 mixture variation between cylindersIntake/exhaust leak/blockage, mechanical fault,ignition control, H02S
P1175Heated oxygen sensor (H02S) 1, bank 2 mixture variation between cylindersIntake/exhaust leak/blockage, mechanical fault,ignition control, H02S
P1182Supercharger (SC) boost pressure sensor malfunctionWiring, intake/exhaust leak/blockage, SC boost pressure sensor, SC bypass valve, BARO sensor,IAT sensor, MAP sensor, MAF sensor, ECM
P1183Supercharger (SC) boost pressure sensor voltage lowWiring, SC boost pressure sensor, ECM
P1184Supercharger (SC) boost pressure sensor voltage highWiring, SC boost pressure sensor, ECM
P1185Engine Oil Temperature Sensor Circuit
P1186Engine Oil Temperature Sensor Circuit Performance
P1187Engine oil temperature (EOT) sensor -voltage lowWiring open circuit/short circuit to ground, EOT sensor, ECM
P1188Engine oil temperature (EOT) sensor -voltage highWiring open circuit/short circuit to positive, EOT sensor, ECM
P1189Engine oil pressure warning lamp switch circuit malfunctionWiring, engine oil pressure warning lamp switch
P1190Engine Vacuum Leak
P1191Intake manifold system ,-air leakIntake hose pipe connections, EGR system, ECM
P1200 – P1299 (Fuel and air metering – injector circuit)
P1200Injectors -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, injectors, ECM
P1201Gas Mass Sensor Circuit Range/Performance
P1202Gas Mass Sensor Circuit Low Frequency
P1203Gas Mass Sensor Circuit High Frequency
P1211Mass Air Flow Circuit Intermittent High
P1212Mass Air Flow Circuit Intermittent Low
P1214Injection Pump Timing Offset
P1215Generator Driver Circuit Conditions
P1216Fuel Solenoid Response Time Too Short Conditions
P1217Fuel Solenoid Response Time Too Long
P1218Injection Pump Calibration Circuit
P1219Throttle Position Sensor Reference Voltage
P1220Throttle motor position sensor 2 -circuit malfunctionWiring, throttle control module
P1221Throttle motor position sensor 1/2 -signalvariationWiring, throttle control module
P1222Injector control, circuit monitor -malfunctionInjector, wiring
P1223Injector 1 -circuit malfunctionWiring, injector, FICM
P1224Injector 1 -circuit malfunctionWiring, injector, ECM
P1225Injector Circuit Cylinder 2 Intermittent
P1226Injector 2 -circuit malfunctionWiring, injector, FICM
P1227Injector 2 -circuit malfunctionWiring, injector, ECM
P1228Injector Circuit Cylinder 3 Intermittent
P1229Injector 3 -circuit malfunctionWiring, injector, FICM
P122AInjector 3 -circuit malfunctionWiring, injector, ECM
P1231Injector Circuit Cylinder 4 Intermittent
P1232Injector 4 -circuit malfunctionWiring, injector, FICM
P1233Injector 4 -circuit malfunctionWiring, injector, ECM
P1234Injector Circuit Cylinder 5 Intermittent
P1235Injector 5 -circuit malfunctionWiring, injector, FICM
P1236Injector 5 -circuit malfunctionWiring, injector, ECM
P1237Injector Circuit Cylinder 6 Intermittent
P1238Injector 6 -circuit malfunctionWiring, injector, FICM
P1239Injector 6 -circuit malfunctionWiring, injector, ECM
P1240Injector Circuit Cylinder 7 Intermittent
P1241Injector 7 -circuit malfunctionWiring, injector, FICM
P1242Injector 7 -circuit malfunctionWiring, injector, ECM
P1243Injector Circuit Cylinder 8 Intermittent
P1244Injector 8 -circuit malfunctionWiring, injector, FICM
P1245Intake Plenum Switchover Valve
P1247Injector 8 -circuit malfunctionWiring, injector, ECM
P1248Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
P1249Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit
P1250Intake manifold heater -circuit malfunctionWiring, intake manifold heater, intake manifold heater relay
P1255Fuel pump control module -driver over-temperatureFuel pump control module
P1257Supercharger System Overboost
P1258Engine overheatingCooling system, ECT sensor
P1260Fuel Pump Speed Relay Control Circuit Conditions
P1261Injectors 1, 4, 6 & 7 -high voltageWiring, injector(s), ECM, FICM
P1262Injectors 2, 3, 5 & 8 -high voltageWiring, injector(s), ECM, FICM
P1270Engine control module (ECM), APP sensor signal-analogue/digital process malfunctionEngine control module (ECM)
P1271Accelerator pedal position (APP) sensor 1/2 signal variationWiring, APP sensor, ECM
P1272Accelerator pedal position (APP) sensor 2/3 -signal variationWiring, APP sensor, ECM
P1273Accelerator pedal position (APP) sensor 1/3 –signal variationWiring, APP sensor, ECM
P1274Injectors Wired Incorrectly
P1275Accelerator pedal position (APP) sensor 1 circuitmalfunctionWiring, APP sensor, ECM
P1276Accelerator pedal position (APP) sensor 1 rangeperformance. Wiring, APP sensor, ECM
P1277Accelerator pedal position (APP) sensor 1 voltage lowWiring, APP sensor, ECM
P1278Accelerator pedal position (APP) sensor 1voltage highWiring, APP sensor, ECM
P1280Accelerator pedal position (APP) sensor 2 circuit malfunctionWiring, APP sensor, ECM
P1281Accelerator pedal position (APP) sensor 2 range performanceWiring, APP sensor, ECM
P1282Accelerator pedal position (APP) sensor 2voltage lowWiring, APP sensor, ECM
P1283Accelerator pedal position (APP) sensor 2voltage highWiring, APP sensor, ECM
P1285Accelerator pedal position (APP) sensor 3 circuitmalfunctionWiring, APP sensor, ECM
P1286Accelerator pedal position (APP) sensor 3 range performanceWiring, APP sensor, ECM
P1287Accelerator Pedal Position Sensor 3 Circuit Low Voltage
P1288Accelerator pedal position (APP) sensor 3voltage highWiring, APP sensor, ECM
P1293Fuel injection control module -circuit malfunction bank 1Fuel injection control module
P1294Fuel injection control module -circuit malfunction bank 2Fuel injection control module
P1295Fuel injection control module -circuit malfunction bank 1Fuel injection control module
P1296Fuel injection control module -circuit malfunction bank 2Fuel injection control module
P129DIgnition switch circu it 1 -low voltageWiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay
P129FFuel pump speed signal -incorrectWiring, fuel pump flow control module (FPMC), fuel pump flow control module (FPCM) relay
P12A1Fuel pump speed circuit -high duty cycleWiring, fuel pump flow control module (FPMC), fuel pump flow control module (FPCM) relay
P12A2Fuel pump speed circuit -performanceWiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay
P12A4Fuel pump enable circuit voltage -lowWiring, fuel pump flow control module (FPMC), fuel pump flow control module (FPCM) relay
P12A5Fuel pump enable circuit voltage -highWiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay
P12A6Fuel pump enable circuit voltage -performanceWiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay
P12A7Fuel pump phase U-V-W circuitWiring, fuel pump flow control module (FPCM) relay
P12AOFuel pump speed circuit -low duty cycleWiring, fuel pump flow control module (FPMC),fuel pump flow control module (FPCM) relay
P1300 – P1399 (Ignition system or misfire)
P1300Ignition coil 1 control -feedback circuit malfunctionWiring, ignition coil 1, ECM
P1305Ignition coil 2 control -feedback circuitmalfunctionWiring, ignition coil 2, ECM
P1310Ignition coil 3 control -feedback circuitmalfunctionWiring, ignition coil 3, ECM
P1315Ignition coil 4 control -feedback circuitmalfunctionWiring, ignition coil 4, ECM
P1320IC Module 4X Reference Circuit Intermittent No Pulses
P1321Electronic Ignition System Fault Line
P1322EI System or Ignition Control Extra or Missing
P1323IC 24X Reference Circuit Low Frequency
P1324Crank RPM Too Low
P1335Crankshaft position (CKP) sensor -circuit malfunctionWiring, CKP sensor, ECM
P1336Crankshaft position (CKP) sensor -variation notlearnedLearning procedure not performed
P133EP133E - Cylinder 7 Glow Plug Offset Exceeded
P1345Crankshaft Position (CKP)-Camshaft Position (CMP) CorrelationCKP sensor, distributor/camshaft alignment, mechanical fault
P1346Camshaft position actuator -circuit malfunctionWiring, mechanical fault, camshaft position actuator, ECM
P1349Camshaft position actuator -circuit malfunctionWiring, mechanical fault, camshaft position actuator, ECM
P1350Ignition control system, bypass monitor circuitmalfunctionWiring, poor connections, ICM, ECM
P1351Ignition control system, coil -voltage highWiring open circuit, ICM, ECM
P1352Ignition control system, bypass circuit voltage highWiring open circuit, ICM, ECM
P1353Ignition control module (ICM) -ignition coil 3circuit voltage highWiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM
P1354Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 4
P1355Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 5
P1356Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 6
P1357Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 7
P1358Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 8
P1359Ignition Control Circuit Group 1
P1360Ignition Control Circuit Group 2
P1361Ignition control system, ignition control (IC) circuit -voltage lowWiring, circuit short circuit to positive/ ground,poor connections, ICM, ECM
P1362Ignition control, bypass circuit -voltage lowWiring short circuit to positive/ground, ICM, ECM
P1363Ignition control module (ICM) -ignition coil 3 circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1364Ignition Control Cylinder 4 Not Toggling After Enable
P1365Ignition Control Cylinder 5 Not Toggling After Enable
P1366Ignition Control Cylinder 6 Not Toggling After Enable
P1367Ignition Control Cylinder 7 Not Toggling After Enable
P1368Ignition Control Cylinder 8 Not Toggling After Enable
P1370Ignition Control Module 4X Reference Circuit Too Many Pulses
P1371Ignition control reference signal. low/high resolution -low signal lostWiring,lCM
P1372Crankshaft Position Sensor A-B Correlation Conditions
P1374Crankshaft position (CKP) sensor, high to lowresolution frequency -signal variationWiring, wiring routed near spark plug wires, ignition coils arCing/tracking, ICM, ECM
P1375IC 24X Reference Circuit High Voltage
P1376Ignition Ground Circuit
P1377Ignition Control Module Cam Ref Pulse To 4X Ref Pulse Incorrect
P1380Antilock brake system (ABS)/traction control system (TCS), rough road signal to engine control module (ECM) -malfunctionABS trouble code(s) stored
P1381Antilock brake system (ABS)/traction control system (TCS), rough road signal to engine control module (ECM) -no communicationWiring, poor connections, ABS
P1390Wheel Speed Sensor 1 G-Sensor Circuit
P1391Rough road sensor -signal malfunctionWiring, rough road sensor, ECM
P1392Rough road sensor -voltage lowWiring, rough road sensor, ECM
P1393Rough road sensor -voltage highWiring, rough road sensor, ECM
P1394Wheel Speed Sensor 1 G-Sensor Circuit Intermittent
P1395Wheel Speed Sensor 2 G-Sensor Circuit
P1396Rough road sensor -signal malfunctionWiring, rough road sensor, wheel speed sensor, ECM
P1397Rough road sensor -signal malfunctionWiring, rough road sensor, wheel speed sensor, ABS control module
P1398Wheel Speed Sensor 2 G-Sensor Circuit High Voltage
P1399Wheel Speed Sensor 2 G-Sensor Circuit Intermittent
P1400 – P1499 (Emission control)
P1400Cold start emission control -malfunctionIntake/exhaust leak/blockage, mechanical fault, idlespeed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H02S
P1403Exhaust gas recirculation (EGR) solenoid 1circuit malfunctionWiring, EGR valve, ECM
P1404Exhaust gas recirculation (EGR) valve not fully closingWiring, poor connections, EGR valve position sensor, EGR solenoid
P1405Exhaust gas recirculation (EGR) solenoid 3 circuit malfunctionWiring, EGR valve, ECM
P1406Exhaust gas recirculation (EGR) valve position sensor range performanceWiring, EGR valve tight/sticking, EGR valve position sensor
P1407EGR Air Intrusion in Exhaust Supply to EGR Valve
P1408Manifold absolute pressure (MAP) sensor voltageout rangeWiring, poor connections, MAP sensor, ECM
P1409EGR Vacuum System Leak
P1410Evaporative emission (EVAP) canister purge valve-circuit malfunctionWiring, poor connections, EVAP canister vent valve, ECM
P1415Secondary air injection (AIR) system, bank 1Wiring, hoses blocked/leaking, AIR valve
P1416Secondary air injection (AIR) system, bank 2Wiring, hoses blocked/leaking, AIR valve
P1418Secondary Air Injection System Relay 'A' Control Circuit High
P1420Intake Air Low Pressure Switch Circuit Low Voltage
P1421Intake Air Low Pressure Switch Circuit High Voltage
P1423Intake Air High Pressure Switch Circuit High Voltage
P1431Fuel level sensor -circuit malfunctionWiring, fuel level sensor
P1432Fuel level sensor low voltageWiring open circuit, fuel level sensor
P1433Fuel level sensor -voltage highWiring short circuit to positive, fuel level sensor
P1441Evaporative emission (EVAP) system -leak detectedHose connection(s), EVAP canister, EVAP canister purge valve
P1442Evaporative emission (EVAP) system vacuum switch -circuit malfunctionHoses blockedlleaking, wiring, EVAP canister, ECM
P1448Diesel particulate filter (DPF) regeneration frequency -too lowHoses blockedlleaking, exhaust, exhaust pressure sensor
P1450Barometric pressure (BARO) sensor -voltage outof rangeWiring, BARO sensor, ECM
P1451Barometric pressure (BARO) sensor performance rangeWiring, poor connections, BARO sensor, ECM
P1460Cooling Fan Control System
P1480Cooling Fan 1 Control Circuit High
P1481Cooling Fan Speed Signal Lost
P1482Cooling Fan Circuit Condition
P1483Engine cooling system -performanceCooling system, ECT sensor, IAT sensor
P1484Cooling Fan RPM Signal Malfunction
P1500 – P1599 (Vehicle or idle speed control)
P1500Ignition switch, cranking signal/system voltage -circuit malfunctionWiring, poor connections, ECM
P1501Theft Deterrent System Fault Conditions
P1502Theft Deterrent Fuel Enable Signal Not Received
P1503Theft Deterrent Fuel Enable Signal Not Correct
P1504Engine control module (ECM). vehicle speed sensor (VSS) output signal -circuit malfunctionWiring, poor connections, ABS, ECM
P1508Idle air control (lAC) valve -low rpmWiring open circuit/short circuit to ground/short circuit to positive, lAC valve, throttle valve tight/sticking
P1509Idle air control (lAC) valve -high rpmWiring open circuit/short circuit to ground/short circuit to positive, lAC valve, throttle valve tight/sticking
P1510Engine control module (ECM), KAM supply voltage -circuit malfunctionWiring, poor connections, ECM
P1511Throttle Control System Backup System Performance
P1512Throttle control unit -signal variationWiring, throttle control unit, ECM
P1514Throttle control unit, intake air flow -excessiveThrottle control unit, MAP sensor, CMP sensor signal, ECM
P1515Throttle command/actual throttle position -signalvariationWiring, throttle valve sticking, throttle control module
P1516Throttle command/actual throttle position signal variationWiring, throttle valve sticking, throttle control module
P1517Throttle control module -malfunctionThrottle control module
P1518Throttle control. module/engine control module(ECM) -communication malfunctionWiring, throttle control module, ECM
P1519Throttle motor position sensor 1 -signal malfunctionThrottle control module
P1520Park/neutral position (PNP) switch -circuit malfunctionWiring short circuit to ground, PNP switchincorrectly adjusted
P1521Transmission Engaged at High Throttle Angle
P1522Park/Neutral to Drive/Reverse at High RPM
P1523Throttle control unit, closed throttle position -performanceThrottle valve movement restricted, throttle control unit
P1524Throttle Closed Position Performance
P1525Throttle Body Service Required
P1526Minimum Throttle Position Not Learned Conditions
P1527Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range
P1529Heated Windshield Request Problem
P1530A/C refrigerant pressure sensor/switch -circuitmalfunctionWiring, A/C refrigerant pressure sensor/ switch, ECM
P1531A/C refrigerant pressure sensor -voltage lowIncorrect refrigerant charge, wiring, A/C refrigerant pressure sensor, ECM
P1532AlC refrigerant temperature sensor -voltage lowWiring open circuit/short circuit to ground, AlC refrigerant temperature sensor, ECM
P1533AlC refrigerant temperature sensor -voltage highWiring open circuit/short circuit to ground, AlC refrigerant temperature sensor, ECM
P1534A/C High Side Temperature Sensor Low Voltage
P1535A/C High Side Temperature Sensor Circuit
P1536Engine Coolant Overtemperature Air Conditioning Disabled
P1537A/C Request Circuit Low Voltage
P1538A/C Request Circuit High Voltage
P1539AlC compressor clutch relay -voltage highWiring, AlC compressor clutch relay, ECM
P1540A/C System High Pressure
P1541A/C High Side Over Temperature
P1542A/C System High Pressure High Temperature
P1543AlC system -performanceRefrigerant low, wiring, AlC refrigerant pressure sensor, AlC evaporator temperature sensor, ECM
P1544A/C Refrigerant Condition Very Low
P1545AlC compressor clutch relay -voltage lowWiring, AlC compressor clutch relay, ECM
P1546A/C compressor clutch relay -circuit malfunctionWiring, A/C compressor clutch relay, ECM
P1547A/C System Performance Degraded
P1548A/C Recirculation Circuit
P154AIntake air heater -feedback circuitWiring, glow plug control module, intake air heater
P154BIntake air heater -voltage signal circuitWiring, glow plug control module, intake air heater
P154CIntake air heater -current signal circuitWiring, glow plug control module, intake air heater
P154DIntake air heater -temperature signal circuitWiring, glow plug control module, intake air heater
P1550Cruise control system, motor actuator -circuitmalfunctionWiring, poor connections, cruise control motor/actuator, ECM
P1551Throttle valve -rest position incorrectWiring, throttle body mechanical fault, throttle body, ECM ,
P1554Cruise control status circuit -high voltageWiring open circuit/short circuit to ground, cruise control module, ECM
P1555Electronic Variable Orifice Output
P1558Cruise control system -performance lowWiring, poor connections, throttle cable sticking, electrical interference
P1559Cruise Control Power Management Mode
P1560Transaxle Not in Drive Cruise Control Disabled
P1561Cruise control, vent solenoid -circuit malfunctionWiring, solenoid valve
P1562Cruise control, vacuum solenoid -circuit malfunctionWiring, solenoid valve
P1563Cruise Vehicle Speed/Set Speed Difference Too High
P1564Cruise Control System Vehicle Acceleration Too High
P1565Cruise control servo position sensor -circuit malfunctionWiring, poor connections, servo position sensor
P1566Cruise Control System Engine RPM Too High
P1567Cruise control master switch -circuit malfunctionWiring, poor connections, cruise control master switch
P1568Cruise control system -performance highWiring, poor connections, throttle cable sticking
P1569Cruise Servo Stroke High While Not In Cruise
P1570Cruise Control System Traction Control Active
P1571Traction control system (TCS), torque request signal -malfunctionWiring, poor connections, ABSITCS
P1572Traction control system (TCS). active signal -malfunctionWiring short to ground, ABSITCS, ECM
P1573Engine control module (ECM), antilock brake system (ASS)/traction control system (TCS)communication -malfunctionWiring, poor connections, ABS control module, ECM
P1574Brake pedal position (BPP) switch, voltage highWiring, ABS
P1575Brake pedal position (BPP) .switch. extended travel contacts -voltage highWiring, ABS
P1576Brake Booster Vacuum Sensor Circuit High Voltage
P1577Brake Booster Vacuum Sensor Circuit Low Input
P1578Brake Booster Vacuum Sensor Circuit Low Vacuum
P1579P/N to D/R at High Throttle Angle - Power Reduction Mode Active
P1580Cruise Move Circuit Low Voltage
P1581Cruise Control Module Move Circuit High Input Conditions
P1582Cruise Control Module Direction Low Input Conditions
P1583Cruise Direction CircuitHigh Voltage
P1584Cruise Control Disabled
P1585Cruise control system, inhibit output circuitWiring, poor connections, cruise control motor/actuator, ECM
P1586Cruise control system. brake switch 2 -circuit malfunctionWiring, poor connections, BPP switch
P1587Cruise Control Clutch Control Circuit Low
P1588Cruise Control Clutch Control Circuit High
P1599Cruise control system -engine management has operated in limited power modeThrottle cable sticking, brake vacuum release valve, cruise control actuator, electricalinterference
P1600 – P1699 (ECM – computer output circuit)
P1600Engine control module (ECM) -malfunctionECM
P1601CAN data bus, ECM/ASSITCS/instrumentation control module/diagnostic control module some communication lostWiring, poor connections, ECM, ABSITCS, diagnostic control module, instrumentation control module
P1602CAN data bus -antilock brake system (ASS)/ traction control system (TCS)Wiring, ABSITCS control module trouble code(s) stored
P1603Loss Of Sensing Diagnostic Mode Data Conditions
P1604CAN data bus -instrument panelWiring, BCM trouble code(s) stored
P1605CAN data bus -A/CWiring, A/C system trouble code(s) stored
P1606Serial Communication Problem With Device 6
P1607Serial Communication Problem With Device 7
P1608Serial Communication Problem With Device 8
P1609Loss Of TCS Serial Data
P160CGlow plug control module engine calibration information -not programmedProgram fuel injection flow rate
P1610CAN data bus -body control module (SCM)Wiring, SCM trouble code(s) stored
P1611Loss Of Continuous Variable Real Time Damping Serial Data Conditions
P1612Loss Of IPM Serial Data
P1613Loss Of DIM Serial Data
P1614Loss Of RIM Serial Data
P1615Loss Of VTD Serial Data
P1617Engine Oil Level Switch Circuit
P1619Engine Oil Life Monitor Reset Circuit
P161BThrottle motor control module -performanceECM, transmission, AlC compressor, manifold absolute pressure (MAP) sensor hose
P1620Low Engine Coolant Circuit Conditions
P1621Engine control module (ECM) -malfunctionECM
P1622Cylinder Select
P1623Engine control module (ECM), PROM -malfunctionPoor connections, incorrect programming, ECM
P1624Engine control module (ECM) memory performanceECM
P1625PCM Flash Checksum TCM Conditions
P1626Engine control module (ECM) -fuel enable signal lostWiring, poor connections, immobilizer control module, ECM
P1627Engine control module (ECM) -malfunctionECM
P1628Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
P1629Engine control module (ECM) -fuel enable signal not receivedIncorrect ignition key, wiring, poor connections, immobilizer control module, ECM
P1630Engine control module (ECM). immobilizer code -leaming modeECM immobilizer code programming not completed
P1631Engine control module (ECM) -incorrect immobilizer codeIncorrect key, immobilizer code not programmed
P1632Engine control module (ECM) -fuel disable signal receivedFuses, BCM, immobilizer code
P1633Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
P1634Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
P1635Engine control module (ECM). sensor supply voltage -circuit malfunctionWiring, poor connections, TP sensor, MAP sensor, EGR valve position sensor, FTP sensor, ECM
P1636PCM Stack Overrun
P1637Alternator warning lamp. control signal -circuit malfunctionWiring, instrument panel, ECM
P1638Alternator ‘F’ terminal -circuit malfunctionWiring open circuit/short circuit to ground,alternator, ECM
P1639Engine control module (ECM). sensor supply voltage -circuit malfunctionWiring. poor connections, A/C refrigerant pressure sensor. FTP sensor. ECM
P1640Engine control module, output driver 1 -supplyv oltage highWiring, loose alternator connection, alternator
P1641Malfunction indicator lamp (MIL) -circuit malfunctionWiring, poor connections, MIL, ECM
P1642Secondary air injection (AIR) pump relay circuit malfunctionWiring, AIR pump relay, ECM
P1643Glow plug warning lamp -circuit malfunctionWiring, glow plug warning lamp, ECM
P1644Traction control system (TCS). delivered torque signal -malfunctionWiring, poor connections, ECM
P1645Evaporative Emission Vent Solenoid Control Circuit
P1646EVAP Vent Solenoid Output Circuit
P1647Driver 1 Line 7
P1648Anti-Theft Device Wrong Security Code
P1650Engine control module, output driver 2 -supply voltage highWiring, loose alternator connection, alternator
P1651Engine coolant blower motor relay 1 -circuit malfunctionWiring, engine coolant blower motor relay, ECM
P1652Engine coolant blower motor relay 2 -circuit malfunctionWiring, engine coolant blower motor relay(s), ECM
P1653Engine oil level ‘low’ warning lamp, control signal -circuit malfunctionWiring short circuit to ground, engine oil level, ECM
P1654A/C compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground, A/C compressor clutch relay, ECM
P1655Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1656Camshaft position actuator -circuit malfunctionWiring open circuit/short circuit to ground, camshaft position actuator, ECM
P1657Skip shift solenoid -circuit malfunctionWiring, skip shift solenoid, ECM
P1658Fuel injector control module (FICM) -malfunctionFICM
P1660Engine control module, output driver 3 -supply voltage highWiring, loose alternator connection, alternator
P1661Malfunction indicator lamp (MIL) -circuit malfunctionWiring, MIL, ECM
P1662Cruise control, inhibit output circuit malfunctionWiring open circuit/short circuit to ground, cruise control motor/actuator, cruise control module, ECM
P1663Alternator warning lamp, control signal -circuitmalfunctionWiring, instrument panel, ECM
P1664Skip shift warning lamp -circuit malfunctionWiring, skip shift warning lamp, ECM
P1665Evaporative emission (EVAP) canister vent valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1666Driver 3 Line 6
P1667Reverse inhibit solenoid -circuit malfunctionWiring, reverse inhibit solenoid, ECM
P1668Alternator ‘L’ terminal -circuit malfunctionWiring, voltage regulator, alternator, ECM
P1669ABS Unit Expected
P166BIntake air heater -over temperatureIntake air heater
P166CIntake air heater -resistanceIntake air heater
P1670ECM -internal circuit malfunction, ignition coilECM
P1671Malfunction indicator lamp (MIL) -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, MIL, ECM
P1672Engine oil level ‘low’ warning lamp, control signal -circuit malfunctionWiring short circuit to ground, engine oil level, ECM
P1673Engine coolant ‘hot’ waming lamp, control signal -circuit malfunctionWiring, instrument panel, cooling system, ECM
P1674Tachometer -circuit malfunctionWiring open circuit/short circuit to groundl shortcircuit to positive, instrument panel, ECM
P1675Evaporative emission (EVAP) canister vent valve -circuit malfunctionWiring, poor connection, EVAP canister vent valve, ECM
P1676Evaporative emission (EVAP) canister purgevalve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister purge valve, ECM
P1677Immobilizer Function Deactivated
P1678Immobilizer Powertrain Identification Failed
P1679Immobilizer Environment Identification Failed
P167AECM -internal circuit malfunction, heated oxygen sensor (H02S) 1, bank 1ECM
P1680Engine control module (ECM) -malfunctionECM
P1681Engine control module (ECM) -malfunctionECM
P1682Engine control module (ECM) -ignition power supply variationWiring, EC relay, starter motor relay, ECM
P1683Engine control module (ECM) -malfunctionECM
P1684Transmission Control Module Power Up Temperature Sensor Performance
P1685Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
P1686Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
P1687Fuel injector control module (FICM) -stuck onECM, FICM
P1689Traction control system (TCS), delivered torque signal -malfunctionWiring, poor connections, ECM
P1690Engine Control Module Loop Overrun
P1691Coolant Gauge Circuit Conditions
P1692Coolant Gauge Circuit High Voltage
P1693Tachometer Circuit Conditions
P1694Tachometer Circuit High Voltage
P1695Remote Keyless Entry Circuit Low Input Conditions
P1696Remote Keyless Entry Circuit High Input Conditions
P16F3Engine control module (ECM) -malfunctionECM
P1700 – P1799 (Transmission)
P1700Transmission control module (TCM) -MIL request circuit malfunctionOBO II TCM trouble codes stored
P1701Transmission MIL Request Circuit
P1705Park Neutral Output Circuit Conditions
P1713Transmission Fluid Pressure Sensor/Switch
P1719Transmission control module (TCM) -detects excessive variation between transmission input/output shaft speed sensorsTransmission fluid level, line pressure, stuck/sticking SS
P1740Cruise control system, overdrive disable signal -voltage lowWiring short to ground, ECM
P1743Throttle Position Invalid Signal
P1760Transaxle Control Module Supply Voltage Interrupted
P1779Engine control module (ECM), torque reduction signal via controller area network (CAN) data bus -out of rangeWiring, TCM, ECM
P1780Engine control module (ECM), controller area network (CAN) data bus -lost communication with transmission control module (TCM)Wiring, ECM
P1781Engine control module (ECM), torque reduction signal -out of rangeWiring, TCM, ECM
P1790Transmission Control Module Checksum
P1791Engine control module (ECM), accelerator pedal position (APP) sensor signal via controller area network (CAN) data bus -out of rangeWiring, APP sensor, TCM, ECM
P1792Engine control module (ECM), engine coolant temperature (ECT) sensor signal via controller area network (CAN) data bus -out of rangeWiring, ECT, TCM, ECM
P1793Transmission Control Module Stack Overrun
P1795Throttle Body Position
P1800 – P1899 (Transmission)
P1800ECM to TCM Engine Coolant Signal
P1801Performance Selector Switch Failure
P1804Ground Control Relay
P1810Transmission fluid pressure (TFP) switch manual valve positionFluid level low, wiring, selector lever linkage incorrectly adjusted, ECMITCM
P1811Shift time too long -adaptation limit reachedFluid level low, transmission mechanical fault
P1812Transmission Fluid Overtemperature
P1813Torque Control Solenoid Malfunction
P1814Torque converter clutch (TCC) -over-stressedFluid level low, fluid condition, transmission mechanical fault
P1815A/T Range Sensor Circuit Malfunction
P1816Transmission fluid pressure (TFP) switch -invalidgear selectionWiring, selector lever linkage incorrectly adjusted, TFP switch, ECMITCM
P1818Transmission fluid pressure (TFP) switch -invalidgear selectionWiring, selector lever linkage incorrectly adjusted, TFP switch, ECMITCM
P1819Transmission range (TR) switch, signals ‘AlBIC &P’ -signal variationWiring, TR switch
P1820Transmission range (TR) switch, signal ‘A’ voltage lowWiring short to ground, TR switch
P1822Transmission range (TR) switch, signal ‘B’ voltage highWiring, TR switch
P1823Transmission range (TR) switch, signal ‘P’ voltagelowWiring short to ground, TR switch
P1824Internal Mode Switch 'P' Circuit High Voltage
P1825Transmission range (TR) switch, signals ‘AlBIC &P’ incorrect signalWiring, TR switch
P1826Transmission range (TR) switch, signal ‘C’ voltage highWiring, TR switch
P1831PC Solenoid Power Circuit Low Voltage
P1833A/T Solenoids Power Circuit Low Voltage
P1835Kick-Down Switch Circuit
P1836Kick-Down Switch Failed Open
P1837Kick-Down Switch Failed Short
P1838Internal Mode Switch 'A' Circuit High Voltage
P1839Internal Mode Switch 'C' Circuit Low Voltage
P1840Internal Mode Switch 'S' Circuit Low Voltage
P1841Internal Mode Switch 'S' Circuit High Voltage
P18421-2 Shift Solenoid Circuit Low Input Voltage
P18431-2 Shift Solenoid Circuit High Input Voltage
P1844Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
P18452-3 Shift Solenoid Circuit Low Input Voltage
P18472-3 Shift Solenoid Circuit High Input Voltage
P1850Brake Band Apply Solenoid Circuit
P1852Brake Band Apply Solenoid Low Input Voltage
P1853Brake Band Apply Solenoid High Input Voltage
P1860Torque converter clutch (TCC) solenoid -circuit malfunctionWiring open circuit/short circuit to ground, TCCsolenoid, ECM
P1864Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
P1868Transmission fluid lifeReplace transmission fluid and filter
P1870Torque converter clutch (TCC) -slip speed excessiveTransmission fluid level, wiring, TCC solenoid,ECM
P1873Torque Converter Clutch Stator Temperature Switch Circuit Low
P1874Torque Converter Clutch Stator Temperature Switch Circuit High
P1875Transmission, 4WD low selection signal-circuit malfunctionWiring, transmission, four wheel drive control module, ECM
P1884TCC Enable/Shift Light Circuit
P1886Transaxle Shift Timing Solenoid Performance
P1887Torque converter clutch (TCC) solenoid release switch -circuit malfunctionWiring open circuit, TCC solenoid release switch,ECMITCM
P1890Throttle Position Signal Input
P1891Throttle Position Sensor PWM Signal Low
P1892Throttle Position Sensor PWM Signal High
P1893Engine Torque Signal Low Voltage
P1894Engine Torque Signal High Voltage
P1895Engine Torque Delivered Circuit
P1900 – P1999 (Transmission)
P1915Internal Mode Switch Start/Wrong Range
P3400Cylinder cut-out system -malfunctionWiring, intake system leaking, mechanical fault,MAF sensor, MAP sensor, TP sensor, ECM
P3401Cylinder cut-out solenoid, cylinder 1 malfunctionWiring, cylinder cut-out solenoid, mechanical fault,ECM
P3425Cylinder cut-out solenoid, cylinder 4 malfunctionWiring, cylinder cut-out solenoid, mechanical fault, ECM
P3441Cylinder cut-out solenoid, cylinder 6 malfunctionWiring, cylinder cut-out solenoid, mechanical fault, ECM
P3449Cylinder cut-out solenoid, cylinder 7 malfunctionWiring, cylinder cut-out solenoid, mechanical fault, ECM
U1000 – U2000 (Manufacturer defined, common defination listed)
U1000CAN data bus -communication malfunctionWiring, BCM, ECM, antilock brake system (ABS)/traction control system (TCS), instrumentation control module, SDM
U1016CAN data bus, engine control module (ECM)/antilock brake system (ABS)/traction control system (TCS)/instrumentation control modulel diagnostic control module -loss of serial communicationWiring, poor connections, ECM, ABS/TCS, diagnostic control module, instrumentation control module
U1026Transmission control module (TCM)/four wheel drive control module, CAN data buscommunication malfunctionWiring, SCM
U1040Antilock brake system (ABS)/traction control system (TCS), CAN data bus -communication malfunctionWiring, ABS/TCS trouble codes stored
U1041Antilock brake system (ABS)/traction control system (TCS), CAN data bus -communication malfunctionWiring, ABSITCS trouble codes stored
U1064. Body control module (BCM), CAN data bus -communication malfunctionWiring, BCM
U1192Engine control module (ECM)/immobilizer control module, CAN data bus -Signal malfunctionWiring, immobilizer control module, ECM
U1193Engine control module (ECM)/immobilizer control module, CAN data bus -signal malfunctionWiring, immobilizer control module, ECM
U1300CAN data bus -signal lowWiring
U1301CAN data bus -Signal highWiring
U1510Lost Communication With HVAC Control Module
U1800Engine control module (ECM)/fuel injector control module (FICM), CAN data bus -communication malfunctionWiring, FICM, ECM
U1802Fuel pump control module (FPCM)communication malfunctionWiring, fuel pump control module (FPCM), fuel pump control module (FPCM) relay
U2104Engine control module (ECM)/transmissioncontrol module (TCM)/fuel injector control module (FICM), CAN data bus communication malfunctionWiring, TCM, FICM, ECM
U2106Engine control module (ECM)/transmission control module (TCM)/fuel injector control module (FICM), CAN data bus communication malfunctionWiring, TCM, ECM, FICM