Cadillac OBD/OBD2 Codes >> Catera 3.0L – DeVille 4.6L – Eldorado 4.6L – Escalade 5.3L – Escalade 5.7L – Escalade 6.0L – Escalade 6.0L – Escalade 6.2L – Seville 4.6L

ModelYearEngine identificationSystem
Catera 3.0L1997-01VIN  position 8 = RGM
DeVille 4.6L1996-05VIN  position 8  =  Y/9GM
Eldorado 4.6L1996-02VIN  position 8  =  Y/9GM
Escalade 5.3L2001-05VIN  position 8  =  T/ZGM
Escalade 5.7L1999-00VIN  position 8 = RGM
Escalade 6.0L2001-06VIN  position 8 =  NGM
Escalade 6.0L2009VIN  position 8 =  5GM
Escalade 6.2L2007-09VIN  position 8 =  2/8GM
Seville 4.6L1996-04VIN  position 8 =  Y/9GM

General information

  • 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.

Accessing

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

Erasing

  • 1999 – Method 1 • 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).
  • 1999 – Method 2

NOTE: Disconnecting battery ground lead may cause driveability problems until the engine management system relearns basic values.

  • Ensure ignition switched OFF.
  • Disconnect battery ground cable for at least 30 seconds.
  • Reconnect battery ground cable.
  • Repeat accessing procedure to ensure no trouble codes remain in ECM fault memory.

NOTE: Disconnecting battery ground lead may also erase memory from electronic units, such as radio.

  • 2000 – • 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
P1031Heated oxygen sensor (H02S) 1, banks 1 & 2 -heater current monitor control circuitWiring short circuit to positive, H02S, ECM
P1032Heated oxygen sensor (H02S) 1, banks 1 & 2 -heater warm up control circuitWiring short circuit to positive, H02S, ECM
P1101Intake air flow -incorrectWiring, mechanical fault, engine coolant temperature (ECT) sensor, exhaust gas recirculation (EGR) valve, intake air temperature (IAT) sensor, manifold absolute pressure (MAP) sensor, mass air flow (MAF) sensor, throttle position (TP) switch
P1106Manifold absolute pressure (MAP) sensor circuit intermittent -voltage highWiring open circuit/short circuit to ground/short circuit to positive
P1107Manifold absolute pressure (MAP) sensor circuit intermittent -voltage lowWiring short circuit to ground
P1108Barometric pressure (BARO) sensor/manifold absolute pressure (MAP) sensor -comparison too highWiring open circuit/short circuit to positive, MAP sensor, ECM
P1111Intake air temperature (IAT) sensor -circuitintermittent -voltage highWiring open circuit, ground lead defective
P1112Intake air valve control valve -circuit malfunctionWiring open circuit/short circuit to ground/positive, intake air valve control valve, ECM
P1112Intake air temperature (IAT) sensor -circuit intermittent -voltage lowWiring short circuit to ground
P1113Intake air flap control actuator -circuit malfunctionWiring open circuit/short circuit to ground/positive, intake air valve control valve, ECM
P1114Engine coolant temperature (ECT) sensor circuit malfunction -voltage lowWiring short circuit to ground
P1115Engine coolant temperature (ECT) sensor circuit malfunction -voltage highWiring open circuit, ground lead defective
P1120Throttle motor position sensor 1 -circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM
P1121Throttle position (TP) sensor -circuit malfunction -voltage highWiring short circuit to positive, ground lead defective
P1122Throttle position (TP) sensor -circuit malfunction -voltage lowWiring open circuit/short circuit to ground
P1125Accelerator pedal position (APP) sensor 1/213signal malfunctionWiring, APP sensor, ECM
P1133Heated oxygen sensor (H02S) 1, bank 1insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1139Heated oxygen sensor (H02S) 2, bank 1insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1140Heated oxygen sensor (H02S) 2, bank 1 slowresponseWiring, oxygen sensor heater, exhaust systemleaking, H02S
P1141Heated oxygen sensor (H02S) 2, bank 1 heater control -circuit malfunctionFuse, wiring, H02S, ECM
P1153Heated oxygen sensor (H02S) 1, bank 2 insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1154Heated oxygen sensor (H02S) 1, bank 2 slowresponseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1161Heated oxygen sensor (H02S) 2, bank 2 heater control -circuit malfunctionFuse, wiring, H02S, ECM
P1172Fuel level sensors, primary & secondary sensor no fuel level change during fuel transfer from secondary to primary tankWiring, secondary fuel pump/relay, fuel level sensors
P1174Heated oxygen sensor (H02S) 1, bank 1 mixture variation between cylindersIntake/exhaust leak/blockage, mechanical fault, ignition control, H02S
P1175Heated oxygen sensor (H02S) 2, bank 2 mixture variation between cylindersIntake/exhaust leak/blockage, mechanical fault, ignition control, H02S
P1189Engine oil pressure waming switch -circuit malfunctionWiring open circuit, engine oil pressure warning switch, ECM
P1220Throttle motor position sensor 2 -circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM
P1221Throttle motor position sensor 1/2 -signal variationWiring, throttle control unit, ECM
P1255Fuel pump control module -driver over-temperatureFuel pump control module
P1258Engine overheatingCooling system, ECT sensor
P1271Accelerator pedal position (APP) sensor 1/2signal variationWiring, APP sensor, ECM
P1275Accelerator pedal position (APP) sensor 1 circuitmalfunctionWiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM
P1276Accelerator pedal position (APP) sensor 1 rangeperformanceWiring, APP sensor, ECM
P1280Accelerator pedal position (APP) sensor 2 circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM
P1281Accelerator pedal position (APP) sensor 2 rangeperformanceWiring, APP sensor, ECM
P1285Accelerator pedal position (APP) sensor 3 circuitmalfunctionWiring, APP sensor, ECM
P1286Accelerator pedal position (APP) sensor 3 rangeperformanceWiring, APP sensor, ECM
P1320Ignition control module (ICM) -4X reference circuit, intermittentWiring open circuit/short circuit to ground, ICM, ECM
P1323Ignition control module (ICM) -24X referencecircuit, low frequencyWiring open circuit/short circuit to ground, ICM, ECM
P1336Crankshaft position (CKP) sensor -variation not learnedLearning procedure not performed
P1345Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -signal variationCKP sensor, distributor/camshaft alignment, mechanical fault
P1350Ignition control module (ICM) -bypass line monitor circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM
P1351Ignition control module (ICM) -ignition control (IC)circuit, voltage highWiring open circuit, ICM, ECM
P1359Ignition control module (ICM) bank 1 -circuit malfunctionWiring open circuit/short circuit to positive, ICM,ECM
P1360Ignition control module (ICM) bank 2 -circuit malfunctionWiring open circuit/short circuit to positive, ICM,ECM
P1361Ignition control module (ICM) -ignition control (IC) circuit, voltage lowWiring short circuit to ground, ICM, ECM
P1370Ignition control module (ICM) -4X reference circuit, too many pulsesWiring, electromagnetic interference, ICM
P1371Ignition control module (ICM) -4X reference circuit, too few pulsesWiring, electromagnetic interference, ICM
P1372Crankshaft pOSition (CKP) sensorWiring open circuit/short circuit to ground/short circuit to positive, CKP, ECM
P1375Ignition control module (ICM) -24X reference circuit, voltage highWiring open circuit/short circuit to ground/short circuit to positive, CKP sensor(s), ICM
P1376Ignition control module (ICM) -ground circuitWiring open circuit/short circuit to pOSitive,ground lead defective, ICM
P1377Ignition control module (ICM) cam pulse/4X reference pulseWiring open circuit/short circuit to ground, electromagnetic interference, valve timing
P1380Rough road signal -signal errorABS control module trouble code(s) stored
P1381Rough road signal -no communication from antilock brake system (ABS) CAN data busWiring open circuit, ABS system
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 -stuck openWiring open circuit/short circuit to positive, EGR valve position sensor, EGR solenoid
P1406Exhaust gas recirculation (EGR) valve position sensor circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, EGR valve position sensor, EGR valve
P1415Secondary air injection (AIR) system, bank 1Wiring, hoses blocked/leaking, AIR valve
P1416Secondary air injection (AIR) system, bank 2Wiring, hoses blocked/leaking, AIR valve, AIR pump relay
P1441Evaporative emission (EVAP) system -leak detectedHose connection(s), EVAP canister, EVAP canister purge valve
P1460Misfire -low fuel levelFuel level low, misfire
P1483Engine cooling system -performanceCooling system, ECT sensor, IAT sensor
P1501Immobilizer control module -circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, MIL circuit
P1502Immobilizer control module -fuel enable signalWiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM
P1503Immobilizer control module -fuel enable signalIncorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, 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
P1510Throttle position motor -throttle limitation activeWiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM
P1511Throttle position motor -limp home system performanceThrottle valve tight/sticking, TP sensor, wiring, throttle control unit, ECM
P1514Intake air flow -excessive flowThrottle control unit, MAP sensor, CMP sensor signal, ECM
P1515Throttle command/actual throttle position signal variationWiring, throttle valve sticking, throttle control unit, ECM
P1516Throttle position motor -position performanceThrottle valve tight/sticking, TP sensor, wiring, throttle control unit, ECM
P1517Throttle control module -malfunctionThrottle control module
P1518Throttle control module/engine control module (ECM) -communication malfunctionWiring, throttle control module, ECM
P1519Throttle position motor -circuit malfunctionWiring open circuit/short circuit to ground, throttle control unit, ECM
P1520Park/neutral position (PNP) switch/transmission range (TR) switchWiring short circuit to ground, incorrectly adjusted, PNP switchlTR switch, ECM
P1523Throttle position motor -closed position performanceThrottle valve tight/sticking, TP sensor, wiring open circuit/short circuit to ground, throttle control unit,ECM
P1524Throttle pOSition (TP) sensor -leamed closed throttle angleAccelerator cable adjustment, throttle valve tight/sticking, throttle valve incorrectly adjusted
P1526Minimum throttle position not leamedInitial learn procedure not carried out
P1527Transmission range (TR) switch/transmission fluid pressure (TFP) switch -signal variationIncorrectly adjusted TR switch, wiring open circuit/short circuit to ground, TR switch, TFP switch, ECM
P1530Throttle position motor -circuit malfunctionWiring open circuit/short circuit to ground, TP sensor, throttle control unit, ECM
P1545AlC compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground, AlC compressor clutch relay, ECM
P1554Cruise control status circuit -high voltageWiring open circuit/short circuit to ground, cruise control module, ECM
P1560Cruise control -transmission not in driveDriver error, TFP switch circuit
P1564Battery voltageWiring
P1564Cruise control -acceleration too highSlippery road conditions
P1566Cruise control -engine speed too highSlippery road conditions, transmission mechanical fault
P1567Cruise control -active brake control system active, cruise control disabledActive brake control system engaged with cruise control on
P1570Cruise control -traction control system (TCS) active, cruise control disabledSlippery road surface
P1571Traction control system (TCS), torque request circuitWiring open circuit/short circuit to groundl short circuit to positive, ABS control module trouble code(s) stored, ECM
P1574Brake pedal position (BPP) switch -voltage highWiring, ABS
P1575Brake pedal position (BPP) switch -extended travel contacts -voltage highWiring, ABS
P1576Brake boost vacuum sensor voltage highWiring open circuit/short circuit to positive, ECM
P1577Brake boost vacuum sensor -.voltage lowWiring open circuit/short circuit to ground, ECM
P1578Brake boost vacuum sensor -vacuum lowWiring open circuit/short circuit to ground, vacuum leak, ECM
P1579Transmission shifted from PIN to O/R at high throttle angleDriver error, wiring, TR switch
P1585Cruise control system -inhibit output circuitWiring open circuit/short circuit to ground/short circuit to positive, supply wire, cruise control motor/actuator, ECM
P1599Engine stall or near stall detectedECM trouble code(s) stored, mechanical fault,transmission mechanical fault
P1600Engine control module (ECM) -memory resetECM
P1601Engine control module (ECM) -temperature highModule cooling fan, ECM
P1602Engine control module (ECM) -knock sensor (KS) moduleECM
P1602CAN data bus -antilock brake system (ABS)/ traction control system (TCS)Wiring, ABS control module trouble code(s) stored
P1603CAN data bus -sensing/diagnostic module (SOM)Wiring
P1604CAN data bus -instrument panelWiring, BCM trouble code(s) stored
P1605CAN data bus –NCWiring, AlC system trouble code(s) stored
P1610CAN data bus -body control module (BCM)Wiring, BCM trouble code(s) stored
P1611Suspension control moduleWiring open circuit/short circuit to ground/short circuit to positive, suspension control module,ECM
P1612Instrumentation control moduleWiring open circuit/short circuit to ground/short circuit to positive, instrumentation control module,ECM
P1613Dash integration module, data busWiring open circuit/short circuit to ground/short circuit to positive, dash integration module, ECM
P1614Rear integration module, data busWiring open circuit/short circuit to ground/short circuit to positive, rear integration module, ECM
P1615Immol;1i1izer control module, data busWiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module,ECM
P1617Engine oil level switch -circuit malfunctionWiring short circuit to ground, engine oil level, ECM
P1621Engine control module (ECM) -memory performance .ECM
P1624Customer snapshot function operatedECM trouble codes stored
P1626Immobilizer control moduleWiring, BCM trouble code(s) stored
P1627Engine control module (ECM) -memory performanceECM
P1630Engine control module (ECM), immobilizer code leaming modeImmobilizer code not programmed
P1631Engine control module (ECM) -incorrect immobilizer codeIncorrect key, immobilizer code not programmed
P1632Engine control module (ECM), fuel disable signalFuses, BCM, immobilizer code
P1633Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
P1634Engine control module (ECM) -ignition supply voltage -voltage lowWiring open circuit, ECM
P1635Sensor supply voltage -circuit A malfunctionWiring s~ort circuit to ground/positive, ground wiring open circuit, EGR valve position sensor, MAP sensor, TP sensor, ECM
P1635Sensor supply voltage -circuit A malfunctionWiring short circuit to ground/positive, ground wiring open circuit, EGR valve position sensor,MAP sensor, ECM
P1637Altemator ‘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
P1639Sensor supply voltage -circuit B malfunctionWiring short circuit to ground/positive, ground wiring open circuit, AlC pressure sensor (DeVille/Seville), FTP sensor, ECM
P1639Sensor supply voltage -circuit B malfunctionWiring short circuit to ground/positive, ground wiring open circuit, FTP sensor, TP sensor, ECM
P1640Engine control module, output driver 1 -supply voltage highWiring, loose alternator connection, alternator
P1641Malfunction indicator lamp (MIL) -circuit malfunctionWiring open circuit/short circuit to ground, MIL, supply wire, ECM
P1642Vehicle speed sensor (VSS) -circuit malfunctionWiring open circuit/short circuit to groundlshort circuit to positive, VSS, ECM
P1644Delivered torque -circuit malfunctionWiring open circuit/short circuit to groundlshort circuit to positive, ABS trouble codes stored, ECM
P1645Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister purge valve, ECM
P1646Evaporative emission (EVAP) canister purge valve-circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister purge valve, ECM
P1650Engine control module, output driver 2 -supply voltage highWiring, loose alternator connection, alternator
P1652Suspension control module -engine control module (ECM), accelerationlbraking signal malfunctionWiring open circuit/short circuit to groundlshort circuit to positive, suspension control module, ECM
P1654Cruise control disable circuit -circuit malfunctionWiring open circuit/short circuit to groundlshort circuit to positive, cruise control module, ECM
P1660Engine coolant blower motor relay(s) -circuit malfunctionWiring open circuit/short circuit to ground, engine coolant blower motor relay(s), ECM
P1662Cruise control indicator lamp -circuit malfunctionFuse, wiring, cruise control indicator lamp, ECM
P1680Engine control module (ECM) -memory performanceECM
P1681Engine control module (ECM) -memory performanceECM
P1682Engine control module (ECM) -ignition power supply less than 10 VWiring, ECM
P1683Engine control module (ECM) -memory performanceECM
P1700Transmission control module (TCM) -MIL request circuit malfunctionOBO II TCM trouble codes stored
P1701Transmission control module (TCM) -MIL request circuitWiring open circuit/short circuit to groundlpositive, ECM
P1740Transmission control module (TCM) -torque control circuitWiring open circuit/short circuit to groundlpositive,TCM, ECM
P1845Torque limit managementOther trouble codes stored, ECM