Cadillac OBD/OBD2 Codes >> 93 Allante 4.6L VIN 9

1993 Cadillac Allante

Cadillac

Accessing Trouble Codes

Checking
  • Switch ignition ON.
  • Simultaneously press and hold the A/C control panel ‘OFF’ and ‘Warmer’ buttons Image [1] & [2]
  • When all segments of the display  Image [3] illuminate: Release the A/C control panel ‘OFF’ and ‘Warmer’ buttons
  • Trouble codes will be displayed in the driver information center  Image [3]
  • Trouble codes will be displayed in ascending order
NOTE: All ECM codes start with the letter ‘P’.  Trouble codes for other systems may also be displayed
  • All current trouble codes end with the letter ‘C’.
  • All history trouble codes end with the letter ‘H’.
  • If no ECM trouble codes are stored, ‘NO PCM CODE’ will be displayed.
NOTE: If ‘NO PCM DATA’ is displayed there is a communication problem between the ECM and BCM.
  • When all trouble codes have been displayed:
  • Press the ‘RESET’ button Image [4]
  • Switch ignition OFF.

Clearing Trouble Codes

  • Switch ignition ON
  • Simultaneously press and hold the A/C control panel ‘OFF’ and ‘Warmer’ buttons Image [1] & [2]
  • When all segments of the display  Image [3] illuminate: Release the A/C control panel ‘OFF’ and ‘Warmer’ buttons
  • Trouble codes will be displayed in the driver information center  Image [3]
  • Trouble codes will be displayed in ascending order
NOTE: Pressing and releasing the ‘LOW’ button will bypass trouble code display
  • When all trouble codes have been displayed:
  • Press and release the ‘LOW’ button Image [5] until ‘ECM’ is displayed
  • Press and release the ‘HI’ button Image [6]
  • Press and release the ‘LOW’ button until ‘ECM CLEAR CODES’ is displayed
  • Press and release the ‘HI’ button
  • ‘ECM CODES CLEAR’ will be displayed for 3 seconds
  • Press the ‘RESET’ button Image [4]
  • Switch ignition OFF

GM

93 4.6L VIN 9
Trouble CodeFault LocationProbable Cause
P012Ignition control module (ICM) -4X reference circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM
P013Heated oxygen sensor (H02S) 2, bank 1 -open circuitWiring open circuit/short circuit to ground/short circuit to positive, H02S, ECM
P014Engine coolant temperature (ECT) sensor -short circuitWiring short circuit to ground, ECT sensor, ECM
P015Engine coolant temperature (ECT) sensor -open circuitWiring open circuit, ECT sensor, ECM
P016Battery voltage -high/lowWiring, alternator, ECM
P017Heated oxygen sensor (H02S) 1, bank 2 -open circuitWiring open circuit/short circuit to ground/ short circuit to positive, H02S, ECM
P019Fuel pump circuit -short circuitWiring short circuit to positive, fuel pump relay, engine oil pressure warning lamp switch
P020Fuel pump circuit -open circuitWiring open circuit/short circuit to ground, fuel pump relay, fuel pump, engine oil pressure warning lamp switch, engine oil pressure too low
P021Throttle position (TP) sensor -voltage highWiring open circuit/short circuit to positive, TP sensor, ECM
P022Throttle position (TP) sensor -voltage lowWiring open circuit/short circuit to ground, TP sensor, ECM
P023Ignition control module (ICM) -circuit malfunctionWiring open circuit/short circuit to positive, ICM
P024Vehicle speed sensor (VSS)Wiring open circuit/short circuit to ground, VSS, ECM
P025Ignition control module (lCM) -24X signal circuit malfunctionWiring open circuit/short circuit to ground, ICM, ECM
P026Closed throttle position (CTP) switch -short circuitWiring short circuit to ground, ISC actuator, ECM
P027Closed throttle position (CTP) switch -open circuitWiring open circuit, ISC actuator, ECM
P028Transmission pressure switch -circuit malfunctionWiring open circuit/short circuit to ground, transmission pressure switch, ECM
P029Shift solenoid (SS) BWiring open circuit/short circuit to ground, transmission mechanical fault, SS, ECM
P030Idle speed (ISC) actuatorWiring open circuit/short circuit to ground, throttle valve tight/sticking, ISC actuator, ECM
P031Manifold absolute pressure (MAP) sensor -short circuitWiring short circuit to positive, hose blocked/leaking, MAP sensor, ECM
P032Manifold absolute pressure (MAP) sensor -open circuitWiring open circuit/short circuit to ground, MAP sensor, ECM
P033Brake pedal position switch (BPP) -extended travel contacts -circuit malfunctionWiring open circuit/short circuit to ground/ positive
P034Manifold absolute pressure (MAP) sensor – voltage highWiring open circuit/short circuit to positive, vacuum leak, MAP sensor, ECM
P035Ignition control module (ICM) -reference low circuit malfunctionWiring open circuit/short circuit to positive, ICM, ECM
P036Exhaust gas recirculation (EGR) solenoid position sensorWiring open circuit/short circuit to ground/short circuit to positive, EGR valve, ECM
P037Intake air temperature (IAT) sensor -short circuitWiring short circuit to ground, IAT sensor, ECM
P038Intake air temperature (IAT) sensor -open circuitWiring open circuit, IAT sensor, ECM
P039Torque converter clutch (TCC) -not engagingWiring open circuit/short circuit to ground, BPP switch for TCC, supply wire, TCC solenoid, transmission mechanical fault, ECM
P040Power steering pressure (PSP) switch -open circuitWiring open circuit/short circuit to ground, PSP switch, ECM
P041Ignition control module (ICM) -camshaft position (CMP) signalWiring open circuit/short circuit to ground, CMP sensor, ICM, ECM
P042Heated oxygen sensor (H02S) 1, bank 2 – mixture leanWiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, H02S
P043Heated oxygen sensor (H02S) 1, bank 2 – mixture richWiring open circuit, fuel pressure high, injector(s) leaking, H02S contamination,EVAP canister purge valve, TP sensor, EGR system, H02S
P044Heated oxygen sensor (H02S) 2, bank 1 – mixture leanWiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, H02S
P045Heated oxygen sensor (H02S) 2, bank 1 -mixture richWiring open circuit, fuel pressure high,injector(s) leaking, H02S contamination, EVAP canister purge valve, TP sensor, EGR system, H02S
P046Long term fuel trim -imbalance bank 1/bank 2Injector(s) leaking, H02S, intake/exhaust, system leaking
P047Body control module (BCM), CAN data bus -communication malfunctionWiring, BCM
P048Exhaust gas recirculation (EGR) systemWiring open circuit/short circuit to ground, EGR system blocked, EGR valve, ECM
P051Engine control module (ECM) -PROMInsecure PROM, incorrect PROM, ECM
P052Engine control module (ECM) -memory resetBattery disconnected, wiring
P053Ignition control module (ICM) -4X reference circuit malfunctionWiring open circuit/short circuit to ground, ICM, ECM
P055Closed throttle position (CPT) -rangeThrottle valve tight/sticking, ISC actuator,TP sensor, cruise control cable
P056Turbine shaft speed (TSS) sensor -circuit malfunctionWiring, TSS sensor, ECM
P057Transmission fluid temperature (TFT) sensor -short circuitWiring short circuit to ground, TFT sensor, ECM
P058Immobilizer control module -fuel enable signalWiring open circuit/short circuit to ground, immobilizer control module, ECM
PO59Transmission fluid temperature (TFT) sensor -open circuitWiring open circuit, TFT sensor, ECM
P060Park/neutral input with cruise control engagedDriver error, wiring open circuit/short circuit to ground, TFP switch
P061Cruise control vent solenoidWiring open circuit/short circuit to groundl short circuit to positive, cruise control vent solenoid, cruise control servo, ECM
P062Cruise control vacuum solenoidWiring open circuit/short circuit to groundl short circuit to positive, cruise control vacuum solenoid, cruise control servo, ECM
P063Cruise control -set speed/vehicle speed mismatchWiring open circuit/short circuit to groundl short circuit to positive, hoses leaking, cruise control servo, ECM
P064Cruise control -acceleration too highSlippery road conditions
P065Cruise control servo position sensor -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, cruise control servo, ECM
P066Cruise control -engine speed too highSlippery road conditions, transmission mechanical fault
P067 ,Cruise control switch -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, cruise control switch, ECM
P068Cruise control servo position sensor -rangeWiring, hoses blockedlleaking, brake pedal vacuum valve, cruise control servo, ECM
P069Cruise control disabled -traction control system active (TCS) activeSlippery road conditions
P070Throttle position (TP) sensor -intermittent signalWiring open circuit/short circuit to groundl short circuit to positive, TP sensor
P071Manifold absolute pressure (MAP) sensor -intermittent signalWiring open circuit/short circuit to groundl short circuit to positive, MAP sensor
P073Engine coolant temperature (ECT) sensor -intermittent signalWiring open circuit/short circuit to groundl short circuit to positive, ECT sensor
P074Intake air temperature (IAT) sensor -intermittent signalWiring open circuit/short circuit to groundl short circuit to positive, IAT sensor
P075Vehicle speed sensor (VSS) -circuit malfunctionWiring open circuit/short circuit, VSS
P076Transmission pressure control (PC) solenoid -circuit malfunctionWiring, PC solenoid, ECM
PO8OThrottle position (TP) sensor -idle learned incompleteTP sensor/idle learn  procedure not completed
PO81Camshaft position (CMP) sensor/4X reference circuit -signal variationElectromagnetic interference, wiring, CMP sensor, mechanical fault
P083Ignition control module (ICM) -24X reference circuit malfunctionWiring open circuit/short circuit/short circuit to positive, CKP sensor(s), ICM, ECM
P085Idle throttle angle -too highthrottle valve tight/sticking, TP sensor, ISC actuator
P086Transmission gear ratioTSS sensor, VSS, transmission mechanical fault, ECM
P088Torque converter clutch (TCe) -stuck ONWiring short circuit to ground, transmission internal wiring, TCC solenoid, ECM
P089Extended shift -adaptation limit reachedTransmission mechanical fault
P090Brake pedal position (BPP) switch for torque converter clutch (TCC)Wiring open circuit/short circuit to ground, incorrectly adjusted, BPP switch, ECM .
P091Transmission range (TR) switch -circuit malfunctionWiring open circuit/short circuit to ground, incorrectly adjusted, TR switch, ECM
P093Traction control system (TCS) -torque request circuitWiring open circuit/short circuit to ground/ short circuit to positive, ABS control module trouble code(s) stored, ECM
P094Shift solenoid (SS) A -ratio problemWiring open circuit/short circuit to ground, SS, transmission mechanical fault, ECM
P095Engine stall or near stall detectedECM trouble code(s) stored, wiring, mechanical fault, transmission mechanical fault
P096Torque converter clutch (TCC) -over-stressedECM trouble codes stored, driver error
P097Transmission shifted from PIN to D/R at high throttle angleDriver error, wiring, TR switch
P099Cruise control servo -position high after disengagementWiring, throttle valve tight/sticking, cruise control servo
P102Brake servo vacuum sensor -short circuitWiring open circuit/short circuit to positive, brake servo vacuum sensor, ECM
P103Brake servo vacuum sensor -open circuitWiring open circuit/short circuit to ground, brake servo vacuum sensor, ECM
P105Brake servo vacuum sensor -voltage lowWiring short circuit to ground, brake servo vacuum sensor, ECM
P106Brake pedal position (BPP) switch, brake lamps -circuit malfunctionWiring, BPP switch
P110Alternator ‘L’ terminal -circuit malfunctionWiring open circuit/short circuit to ground, alternator, battery temperature sensor, ECM
P112Engine control module (ECM) -EEPROMECM
P117Shift solenoid (SS) AlB -circuit malfunctionWiring open circuit/short circuit to ground, transmission mechanical fault, ECM
P0131Knock sensor (KS) -test failureWiring, KS incorrectly fitted, KS, ECM
P0132Knock sensor (KS) -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, KS incorrectly fitted, KS, insecure PROM, ECM
P0137CAN data bus -antilock brake system (ABS)/ traction control system (TCS)Wiring, ABS control module trouble code(s) stored