Chevrolet OBD / OBD2 Codes >> Astro/Blazer – Camaro/Caprice – Camaro/Caprice – Corvette – Express – Metro – Silverado/Suburban – S10 Pickup – Tahoe – Tracker

ModelYearEngine identificationSystem
Astro/Blazer 4.3L1996-05VIN  position 8 =  W/XGM
Camaro/Caprice 3.8/5.7L1995-02VIN  position 8 = G/K/PGM
C/K Pickup 4.3/5.0/5.7/7.4L1996-00VIN  position 8 = J/M/R/W/XGM
Corvette 5.7/S.0/S.2/7.0L  (OBO-II)1994-09VIN  position 8 =  E/G/P/RIS/U/W/YGM
Express 4.3/5.0/5.7/7.4/8.1 L1996-07VIN  position 8 = G/J/M/R/W/XGM
Express 4.8/5.3/6.0L2003-09VIN position 8 = 2/4/C/K/T/U/V/WGM
Express 6.6L Diesel2004-09LLY/LMMGM
Metro 1.0/1.3L1998-01VIN  position 8 = 2/6GM
Silverado/Suburban 4.3/4.S/5.3/5.7/6.0/7.4/8.1L1996-09VIN position 8 = 3/5/0/B/C/G/J/K/N/T/U/W/X/Y/ZGM
Silverado S.SL Turbo Diesel2001-09VIN  position 8 =  1/2GM
S10 Pickup 2.2/4.3L1996-05VIN  position 8 = W/X/4/5GM
Tahoe 4.8/5.3/5.7L1996-06VIN  position 8 = R/T/V/ZGM
Tracker 1.6/2.0/2.5L1998-04VIN  position 8 = 1/6/CGM

General information

  • Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
  • Malfunction indicator lamp (MIL) will illuminate or flash if certain faults are recorded.
  • ECM operates in backup mode if sensors fail , to enable vehicle to be driven to repair shop.


  • Trouble codes can only be displayed by using a Scan Tool connected to the data link connector (DLC).


  • After the faults have been rectified, the manufacturer recommends that trouble codes are erased by using a Scan Tool connected to the data link connector (DLC).

Trouble code  identification

Scan codeFault locationProbable cause
PO,P2,UORefer to OBO-II trouble code tables
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
P1101Intake air flow -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
P1106Manifold absolute pressure (MAP) sensor voltage high, intermittentWiring open circuit/short circuit to positive, poor connections
P1107Manifold absolute pressure (MAP) sensor voltagelow, 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
P1111Intake air temperature (IAT) sensor -voltage high,intermittentWiring open circuit/short to positive, poor connections
P1112Intake air temperature (IAT) sensor -voltage low, intermittentWiring short circuit to ground
P1114Engine coolant temperature (ECT) sensor voltagelow, intermittentWiring short circuit to ground, poor connections
P1115Engine coolant temperature (ECT) sensor voltage high, intermittentWiring open circuit/short to positive, poor connections
P1120Throttle motor position sensor 1 -circuit malfunctionWiring, 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 1/2/3 -signal malfunctionWiring, APP sensor, ECM
P1132Heated oxygen sensor (H02S) 1, bank 1 signal circuit shorted to heater circuitWiring, H02S, ECM
P1133Oxygen sensor (02S)/heated oxygen sensor(H02S) 1, bank 1 -insufficient switchingWiring, exhaust system leaking, 02S/H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 slow responseWiring, oxygen sensor heater, exhaust system leaking, H025
P1137Heated oxygen sensor (H02S) 2, bank 1 voltage lowWiring, exhaust system leaking, H025
P1138Heated oxygen sensor (H02S) 2, bank 1 voltage highWiring, H02S
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 slowresponseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1158Heated oxygen sensor (H02S) 2, bank 2 -not switching, fuel trim (FT) rich mixtureWiring, exhaust system leaking, H02S
P1171Fuel system -lean during accelerationFuel filter, fuel pump, H02S, injectors
P1172Fuel level sensors, primary & secondary sensor no fuel level change during fuel transfer from secondary 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
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
P1191Intake manifold system ,-air leakIntake hose pipe connections, EGR system, ECM
P1220 0Injector control, circuit monitor -malfunctionWiring, injector, ECM
P1220 fJThrottle motor position sensor 2 -circuit malfunctionWiring, throttle control module
P1221Throttle motor position sensor 1/2 -signal variationWiring, throttle control module
P1222Injector control, circuit monitor -malfunctionInjector, wiring
P1223Injector 1 -circuit malfunctionWiring, injector, FICM
P1224Injector 1 -circuit malfunctionWiring, injector, ECM
P1226Injector 2 -circuit malfunctionWiring, injector, FICM
P1227Injector 2 -circuit malfunctionWiring, injector, ECM
P1229Injector 3 -circuit malfunctionWiring, injector, FICM
P122AInjector 3 -circuit malfunctionWiring, injector, ECM
P1232Injector 4 -circuit malfunctionWiring, injector, FICM
P1233Injector 4 -circuit malfunctionWiring, injector, ECM
P1235Injector 5 -circuit malfunctionWiring, injector, FICM
P1236Injector 5 -circuit malfunctionWiring, injector, ECM
P1238Injector 6 -circuit malfunctionWiring, injector, FICM
P1239Injector 6 -circuit malfunctionWiring, injector, ECM
P1241Injector 7 -circuit malfunctionWiring, injector, FICM
P1242Injector 7 -circuit malfunctionWiring, injector, ECM
P1244Injector 8 -circuit malfunctionWiring, injector, FICM
P1247Injector 8 -circuit malfunctionWiring, injector, ECM
P1250Intake manifold heater -circuit malfunctionWiring, intake manifold heater, intake manifold heater relay
P1255Fuel pump control module -driver over-temperatureFuel pump control module
P1258Engine overheatingCooling system, ECT sensor
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 1/2signal 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
P1275Accelerator pedal position (APP) sensor 1 circuit malfunctionWiring, APP sensor, ECM
P1276Accelerator pedal position (APP) sensor 1 range performanceWiring, 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 circuit malfunctionWiring, APP sensor, ECM
P1286 P1287Accelerator pedal position (APP) sensor 3 range performance Accelerator pedal position (APP)sensor 3 voltage lowWiring, APP sensor, ECM Wiring, APP sensor, ECM
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
P12AOFuel pump speed circuit -low duty cycleWiring, 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
P1336Crankshaft position (CKP) sensor -variation not leamedLearning procedure not performed
P1345Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -signal variationCKP sensor, distributor/camshaft alignment, mechanical fault
P1350Ignition control system, bypass circuit -circuit malfunctionWiring, 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
P1361Ignition control system, ignition control (IC) circuit -voltage lowWiring, circuit short circuit to ground, poor connections, ICM, ECM
P1362Ignition control. bypass circuit -voltage lowWiring short circuit to ground, ICM, ECM
P1371Ignition control reference signal. low/high resolution -low signal lostWiring,lCM
P1374Crankshaft position (CKP) sensor. high to low resolution frequency -signal variationWiring, wiring routed near spark plug wires, ignition coils arcing/tracking, ICM, ECM
P1380Antilock brake system (ABS)/traction controlsystem (TCS). rough road signal to engine control module (ECM) -malfunctionASS 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
P1400Cold start emission control -malfunctionIntake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H02S
P1404Exhaust gas recirculation (EGR) valve -not fully closingWiring, poor connections, EGR valve position sensor, EGR solenoid
P1406Exhaust gas recirculation (EGR) valve position sensor range performanceWiring, EGR valve tight/sticking, EGR valve position sensor
P1408Manifold absolute pressure (MAP) sensor voltageout rangeWiring, poor connections, MAP sensor, ECM
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
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 -leakdetectedHose 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
P1500Ignition switch, cranking signal/system voltage -circuit malfunctionWiring, poor connections, ECM
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
P1514Throttle control unit, intake air flow -excessiveThrottle control unit, MAP sensor, CMP sensor signal, ECM
P1515Throttle command/actual throttle position -signal variationWiring, 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 switch incorrectly adjusted
P1523Throttle control unit, closed throttle position -performanceThrottle valve movement restricted, throttle control unit
P1530Ignition timing adjustment connectorWiring short circuit to ground, connector short to ground
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
P1539AlC compressor clutch relay -voltage highWiring, AlC compressor clutch relay, ECM
P1543AlC system -performanceRefrigerant low, wiring, AlC refrigerant pressure sensor, AlC evaporator temperature sensor, ECM
P1545AlC compressor clutch relay -voltage lowWiring, AlC compressor clutch relay, ECM
P1546AlC compressor clutch relay -circuit malfunctionWiring, AlC compressor clutch relay, ECM
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
P1550System voltage lowWiring, battery, alternator
P1554Cruise control status circuit -high voltageWiring open circuit/short circuit to ground, cruise control module, ECM
P1571Traction control system (TCS). torque request signal -malfunctionWiring, poor connections, ABSITCS
P1572Traction control system (TCS). active signal -malfunctionWiring short to ground, ABSITCS, ECM
P1574Brake pedal position (BPP) switch, voltage highWiring, ABS
P1575Brake pedal position (BPP) .switch. extended travel contacts -voltage highWiring, ABS
P1586Cruise control system. brake switch 2 -circuit malfunctionWiring, poor connections, BPP switch
P1600Engine control module (ECM) -malfunctionECM
P160CGlow plug control module engine calibration information -not programmedProgram fuel injection flow rate
P1601CAN data bus, engine control module (ECM)/antilock brake system (ABS)/tractioncontrol system (TCS)/instrumentation control module/diagnostic control module some communication lostWiring, poor connections, ECM, ABSITCS, diagnostic control module, instrumentation control module
P1602Engine control module (ECM) to antilock brake system (ABS)/traction control system (TCS).CAN data bus -communication failureWiring, poor connections, ABS control module
P1621Engine control module (ECM) -malfunctionECM
P1624Engine control module (ECM) memory performanceECM
P1626Engine control module (ECM) -fuel enable signal lostWiring, poor connections, immobilizer control module, ECM
P1627Engine control module (ECM) -malfunctionECM
P1629Engine control module (ECM) -fuel enable signal not receivedIncorrect ignition key, wiring, poor connections, immobilizer control module, ECM
P1630Engine control module (ECM). immobilizer code -learning 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
P1635Engine control module (ECM), sensor supply voltage -circuit malfunctionWiring, poor connections, TP sensor, MAP sensor, EGR valve position sensor, FTP sensor, ECM
P1635Engine control module (ECM), sensor supply voltage -circuit malfunctionWiring, poor connections, APP sensor 1/3, engine oil pressure sensor, fuel rail pressure sensor, ECM
P1637Alternator ‘L’ terminal -circuit malfunctionWiring open circuit/short circuit to ground, alternator, battery temperature sensor, 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, AlC refrigerant pressure sensor, ECM
P1639Engine control module (ECM). sensor supplyvoltage -circuit malfunctionWiring, poor connections, fuel tank level sensor, ECM
P1639Engine control module (ECM), sensor supply voltage -circuit malfunctionWiring, poor connections, FTP sensor, ECM
P1639Engine control module (ECM), sensor supply voltage -circuit malfunctionWiring, poor connections, FTP sensor, AlC refrigerant pressure sensor, ECM
P1639Engine control module (ECM), sensor supply voltage -circuit malfunctionWiring, poor connections, FTP sensor, throttle position (TP) sensor, ECM
P1639Engine control module (ECM), sensor supplyvoltage -circuit malfunctionWiring, poor connections, APP sensor, TC boostpressure sensor, BARO sensor, EGR vacuum sensor, ECM
P1641Malfunction indicator lamp (MIL) -circuit malfunctionWiring, poor connections, MIL, ECM
P1641Engine coolant blower motor relay 1 -circuit malfunctionWiring, engine coolant blower motor relay, ECM
P1642Engine coolant blower motor relay 2 & 3 circuit malfunctionWiring. engine coolant blower motor relay(s),ECM
P1643Engine speed (RPM), engine control module (ECM) output signal -circuit malfunctionWiring, tachometer, ECM
P1643Glow plug warning lamp -circuit malfunctionWiring, glow plug warning lamp, ECM
P1644Traction control system (TCS), delivered torque signal -malfunctionWiring, poor connections, ECM
P1651Engine coolant blower motor relay 1 -circuit malfunctionWiring, engine coolant blower motor relay, ECM
P1652Engine control module (ECM), vehicle speed sensor (VSS) output signal -circuit malfunctionWiring, poor connections, ECM
P1652Engine control module (ECM), firm suspensionrequest Signal -circuit malfunctionWiring, poor connections, suspension control module, ECM
P1652Engine coolant blower motor relay 2 & 3 circuit malfunctionWiring, engine coolant blower motor relay(s),ECM
P1653Fuel gauge, control signal -circuit malfunctionWiring, ECM
P1653Engine oil level ‘low’ warning lamp, control Signal -circuit malfunctionWiring short circuit to ground, engine oil level, ECM
P1654AlC compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground, AlC compressor clutch relay, ECM
P1655Evaporative emission (EVAP) canister purgevalve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1657Skip shift solenoid -circuit malfunctionWiring, skip shift solenoid, ECM
P1658Fuel injector control module (FICM) -malfunctionFICM
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
P1663Engine oil life monitor reset switch -circuitmalfunctionWiring short circuit to ground, engine oil life monitor reset switch, 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
P1667Reverse inhibit solenoid -circuit malfunctionWiring, reverse inhibit solenoid, ECM
P1668Alternator ‘L’ terminal -circuit malfunctionWiring , ECM , voltage regulator , alternator
P166BIntake air heater -over temperatureIntake air heater
P166CIntake air heater -resistanceIntake air heater
P1671Malfunction indicator lamp (MIL) -circuitmalfunctionWiring open circuit/short circuit to ground/shortcircuit to positive, MIL, ECM
P1672Engine oil level ‘low’ warning lamp, control signal-circuit malfunctionWiring short circuit to ground, engine oil level,ECM
P1676Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister purge valve, ECM
P1680Engine control module (ECM) -malfunctionECM
P1681Engine control module (ECM) malfunctionECM
P1682Engine control module (ECM) -ignition powersupply less than 10 VWiring, ECM
P1683Engine control module (ECM ) malfunctionECM
P1687Fuel injector control module (FICM) -stuck onECM, FICM
P1689Traction control system (TCS), delivered torque signal -malfunctionWiring, poor connections, ECM
P1740Cruise control system, overdrive disable signal -voltage lowWiring short to ground, ECM
P1781Transmission control module (TCM ), malfunctionindicator lamp (MIL) request signal -voltagehigh/lowWiring TCM, ECM
P1810Transmission gear pressure switch, signal -circuit malfunctionWiring open circuit/short circuit to ground,reverseID1/D21D3/D4 gear pressure switch(es), ECM
P1860Torque converter clutch (TCC) solenoid, pulse width modulation (PWM ) -circuit malfunctionWiring open circuit/short circuit to ground, TCC solenoid, ECM
P1870Torque converter clutch (TCC) -slip speed excessiveTransmission fluid level, wiring, TCC solenoid,ECM
P1875Transmission, 4WD low selection signal-circuit malfunctionWiring, transmission, four wheel drive control module, ECM
U1000CAN data bus -communication malfunctionWiring, SCM, ECM, instrumentation controlmodule,SDM
U1026Transmission control module (TCM)/four wheel drive control module, CAN data buscommunication malfunctionWiring, SCM
U1041Antilock brake system (ABS)/traction control system (TCS), CAN data bus -communication malfunctionWiring, ABSITCS trouble codes stored
U1064Body control module (BCM), CAN data bus -communication malfunctionWiring, SCM
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
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