GM OBD/OBD2 Codes >> GM 94-95 4.9L VIN B DeVille

GM

94-95 4.9L VIN B
Trouble codeFault locationProbable cause
P012Ignition control module (ICM) -4X reference circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, (CM, ECM
P012Ignition control module (ICM) -no distributor reference signalWiring open circuit/short circuit to ground! shocircuit to positive, CKP sensor, 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 ci rcuitWiring 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 rela) 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, TF sensor, ECM
P022Throttle position (TP) sensor -voltage lowWiring open circuit/short circuit to ground, TF 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 (ICM) -24X signal circuit malfunctionWiring open circuit/short circuit to ground, ICM, ECM
P026Closed throttle position (CTP) switch -short circuit .Wiring 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 blockecL 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 circuiUshort circuit to positive, ICM, ECM
P036Exhaust gas recirculation (EGR) solenoid position sensorWiring open circuiUshort circuit to ground/ short circuit to positive, EGR valve, ECM
P037Intake air temperature (IAT) sensor -short circuitWiring short circuit to ground, IAT sensor, ECM
P03SIntake air temperature (IAT) sensor -open circuitWiring open circuit, IAT sensor, ECM
P039Torque converter clutch (TCC) -not engagingWiring open circuiUshort circuit to ground, BPP switch for TCC, supply wire, TCC solenoid, transmission mechanical fault, ECM
P040Power steering pressure (P8P) switch -open circuitWiring open circuiUshort 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 (H028) 1, bank 2 -mixture leanWiring short circuit to ground, injector(s), blocked, fuel contamination, fuel pressure low, exhaust system leaking, H02S
P043Heated oxygen sensor (H028) 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 (H028) 2, bank 1 -mixture leanWiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, H02S
P045Heated oxygen sensor (H028) 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 circuiUshort 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 circuiUshort circuit to ground, ICM, ECM
P053Ignition control module (ICM) -intermittent distributor reference signalWiring open circuiUshort circuit to ground/ short circuit to positive, CKP sensor
P055Closed throttle position (CPT) -rangeThrottle valve tighUsticking, ISC actuator, TP sensor, cruise control cable
P056Turbine shaft speed (T88) 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 circuiUshort circuit to ground, immobilizer control module, ECM
P059Transmission 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 ground/short circuit to positive, cruise control vent solenoid, cruise control servo, ECM
P062Cruise control vacuum solenoidWiring open circuit/short circuit to ground/short circuit to positive, cruise control vacuum solenoid, cruise control servo, ECM
P063Cruise control – set speed/vehicle speed mismatchWiring open circuit/short circuit to ground/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 ground/short circuit to positive, cruise control servo, ECM
P066Cruise control – engine speed too highSlippery road conditions, transmission mechanical fault
P067Cruise control witch – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, cruise control switch, ECM
P068Cruise control servo position sensor – rangeWiring, hoses blocked/leaking, brake pedal vacuum valve, cruise control servo, ECM
P069Cruise control disabled – traction control system (TCS) activeSlippery road conditions
P070Throttle position (TP) sensor – intermittent signalWiring open circuit/short circuit to ground/short circuit to positive, TP sensor
P071Manifold absolute pressure (MAP) sensor – intermittent signalWiring open circuit/short circuit to ground/short circuit to positive, MAP sensor
P073Engine coolant temperature (ECT) sensor – intermittent signalWiring open circuit/short circuit to ground/short circuit to positive, ECT sensor
P074Intake air temperature (IAT) sensor – intermittent signalWiring open circuit/short circuit to ground/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
P080Fuel system richFuel pressure high, injector(s) leaking, EVAP system
P081Camshaft 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 to ground/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 (TCC) -stuck ONWiring short circuit to ground, transmission internal wiring, TCC solenoid, ECM
P089Extended shift -adaptation limit reachedTransmission mechanical fault
P090Brake pedal position (BPP) switch TCCWiring 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
P092Heated windshield request -circuit malfunctionWiring short circuit to ground, heated windshield module, ECM
 P094Traction control system (TCS) -torque request circuit Shift solenoid (SS) A -ratio problemWiring open circuit/short circuit to groundl short circuit to positive, ABS control module trouble code(s) stored, ECM Wiring open circuit/short circuit to ground, 55, 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
P098Transmission shifted from PIN to D/R in idle speed control (ISC) rangeDriver 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 groundl short circuit to positive, KS incorrectly fitted, KS, insecure PROM, ECM
P0137CAN data bus -antilock brake system (ABS)I traction control system (TCS)Wiring, ABS control module trouble code(s) stored
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Matthew Mcneely
Matthew Mcneely
2 years ago

95 Cadillac deville 4.9 v8
Po38
Io22
Io39

Nav
Nav
1 year ago

Codes P095 & P076 are popping up. Ordered new map sensor. Might pick up transmission pressure control next. Not sure. Is it the PCM?

John reese
John reese
3 years ago

I have a 94 deville 4.9 the buttons on heater a/c. The defrost button is lit up nothing works .However when i un plugged battery it will work for a few days unless you touch a button does anyone know what needs to be fixed

Rex Wetzel
Rex Wetzel
3 years ago
Reply to  John reese

Hello John, have you resolved this issue yet?