GM OBD/OBD2 Codes >> GM 92-95 2.2L VIN 4

GM

92-95 2.2L VIN 4
Flash codeFault locationProbable cause
12Start of diagnosisNo engine speed (RPM) signal received
13Oxygen sensor (02S)/heated oxygen sensor (H02S)Wiring open circuit, 02S/H02S, ECM
14Engine coolant temperature (ECT) sensor -voltage high/lowWiring, ECT sensor, ECM
15Engine coolant temperature (ECT) sensor -voltage highWiring open circuit, ECT sensor, ECM
16System voltage – high/lowWiring, battery, alternator
17Camshaft position (CMP) sensor -circuit malfunctionWiring, CMP sensor, mechanical fault, ECM
18Camshaft position (CMP) signal/fuel control signalWiring open circuit/short circuit to ground, CKP sensor, CMP sensor, ICM, ECM
19Crankshaft position (CKP) sensor, 7X signal -circuit malfunctionWiring, CKP sensor, ICM, ECM
21Throttle position (TP) sensor -voltage high/ lowWiring, TP sensor, ECM
22Throttle position (TP) sensor -voltage lowWiring open circuit/short circuit to ground, TP sensor, ECM
23Intake air temperature (IAT) sensor -voltage high/lowWiring, IAT sensor, ECM
24Vehicle speed sensor (VSS) -no signalWiring, VSS, ECM
25Intake air temperature (IAT) sensor -voltage lowWiring short circuit to ground, IAT sensor, ECM
26Engine control module (ECM), quad driver! output driver -circuit malfunctionWiring, ECM controlled components, ECM rn
27Engine control module (ECM), quad driver! output driver -circuit malfunctionWiring, ECM controlled components, ECM rn
28 (Beretta – 1994) (Cavalier 1994-1995)Engine control module (ECM), quad driver! output driver -circuit malfunctionWiring, ECM controlled components, ECM rn
28 (1992-1993)Transmission range (TR) switch -malfunctionWiring, TR switch, ECM
31Transmission range (TR) switch -malfunctionWiring, TR switch, ECM
32Exhaust gas recirculation (EGR) solenoidWiring, poor connections, EGR valve, ECM
33Manifold absolute pressure (MAP) sensor -voltage high!lowWiring, hose blocked/leaking, MAP sensor, ECM
34Manifold absolute pressure (MAP) sensor -voltage lowWiring open circuit/short circuit to ground, MAP sensor, ECM
35Idle air control (lAC) valveWiring, lAC valve, intake system leaking, fuel system, PCV valve, A/C system, mechanical fault, ECM
36Crankshaft position (CKP) sensor, at crankshaft pulley -24X signal circuit malfunctionWiring, CKP sensor, ECM
37Brake pedal position (BPP) switch for torque converter clutch (TCC)Wiring, incorrectly adjusted, BPP switch, ECM
38Brake pedal position (BPP) switch for torque converter clutch (TCC)Wiring open circuit/short circuit to ground/ short circuit to positive, BPP switch incorrectly adjusted, BPP switch, ECM
39Clutch pedal position (CPP) switchWiring, incorrectly adjusted, CPP switch, ECM
41Engine control module (ECM), programming – malfunctionECM incorrect programming, ECM failure
42Ignition control, bypass/timing signal -circuit malfunctionWiring, poor connections, ICM, ECM
43Knock sensor (KS)/knock control module -circuit malfunctionWiring, KS, knock control module, ECM
44Oxygen sensor (02S)/heated oxygen sensor (H02S) -mixture leanWiring open circuit/short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, 02S/H02S, ECM
45Oxygen sensor (02S)/heated oxygen sensor (H02S) -mixture richWiring open circuit, fuel pressure high, injector(s) leaking, 02S/H02S, EVAP purge valve, TP sensor, EGR system, ECM
46Immobilizer system, code -malfunctionIncorrect key, ECM
51Engine control module (ECM), PROM -malfunctionPoor connections, incorrect programming, ECM
52Engine control module (ECM) -malfunctionECM
53System voltage -highAlternator
54Fuel pump circuit -voltage lowWiring open circuit/short circuit to ground, fuel pump relay, engine oil pressure warning lamp/fuel pump switch
55Engine control module (ECM) -malfunctionECM
55 (Beretta – 1994) (Cavalier 1994-1995)Engine control module (ECM), fuel lean monitorFuel filter/lines blocked, fuel contamination
56Engine control module (ECM), quad driver/ output driver -circuit malfunctionWiring, ECM controlled components, ECM IE
58Transmission fluid temperature (TFT) sensor -voltage lowWiring short circuit to ground, TFT sensor, ECM
59Transmission fluid temperature (TFT) sensor -voltage highWiring open circuit, TFT sensor, ECM
61Oxygen sensor (02S) -malfunction02S
62Transmission gear switch signal circuitWiring open circuit/short circuit to ground, 2nd gear switch, 3rd gear switch, ECM
63Cruise control servo -servo position sensor lowHoses leaking, cruise control servo
65Injectors -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, injectors, ECM
66A/C refrigerant pressure sensor -voltage lowWiring open circuit/short circuit to ground, A/C refrigerant pressure sensor, ECM
67Cruise control switch -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, cruise control switch, ECM
68Cruise control servo -servo position sensor highHoses blocked/leaking, brake pedal vacuum valve, cruise control servo
69A/C refrigerant pressure switch, engine coolant blower motorsWiring open circuit, A/C refrigerant pressure switch, ECM
70A/C refrigerant pressure sensor -voltage highWiring open circuit/short circuit to positive, A/C refrigerant pressure sensor, ECM
75Exhaust gas recirculation (EGR) solenoid 1 -circuit malfunctionWiring, EGR valve, ECM
76Exhaust gas recirculation (EGR) solenoid 2 -circuit malfunctionWiring, EGR valve, ECM
77Exhaust gas recirculation (EGR) solenoid 3 -circuit malfunctionWiring, EGR valve, ECM
81Brake pedal position (BPP) switch for torque converter clutch (TCC) -circuit malfunctionWiring, BPP switch, ECM
82Crankshaft position (CKP) sensor, in cylinder block -3X signal circuit malfunctionWiring open circuit/short circuit to ground, CKP sensor, ICM
85Engine control module (ECM), PROM -malfunctionPoor connections, incorrect programming, ECM
86Engine control module (ECM) -analogue/ digital converterA/C refrigerant pressure sensor/KS/ECT sensor/fuel pump monitor circuit short circuit to battery voltage
87Engine control module (ECM), EEPROM -malfunctionPoor connections, incorrect programming, ECM
90Torque converter clutch (TCC) -stuck ONWiring open circuit/short circuit to ground, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM
96Engine control module (ECM) -ignition supply voltage lowWiring open circuit, alternator, ECM
98Engine control module (ECM) – incorrectly codedECM incorrectly coded, ECM
99Cruise control system – engine management has operated in limited power modeThrottle cable sticking, brake vacuum release valve, cruise control actuator
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