GM GM 95 4.0L VIN C Trouble Code Info

GM

 
95 4.0L VIN C
Flash Code Fault Location Probable Cause
12 Ignition control module (ICM) -4X reference circuit malfunction Wiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM
13 Heated oxygen sensor (H02S) 1, bank 1 -open circuit Wiring open circuit/short circuit to ground/ short circuit to positive, H025, ECM
14 Engine coolant temperature (ECT) sensor -high temperature indicated Wiring short circuit to ground, ECT sensor, ECM
15 Engine coolant temperature (ECT) sensor -low temperature indicated Wiring open circuit, ECT sensor, ECM
16 Battery voltage -high/low Wiring, alternator, ECM
17 Heated oxygen sensor (H02S) 1, bank 2 -open circuit Wiring open circuit/short circuit to ground/ short circuit to positive, H025, ECM
19 Fuel pump circuit -short circuit Wiring short circuit to positive, fuel pump relay, engine oil pressure warning lamp switch
20 Fuel pump circuit -open circuit Wiring open circuit/short circuit to ground, fuel pump relay, fuel pump, engine oil pressure warning lamp switch, engine oil pressure too low
21 Throttle position (TP) sensor -voltage high Wiring open circuit/short circuit to positive, TP sensor, ECM
22 Throttle position (TP) sensor -voltage low Wiring open circuit/short circuit to ground, TP sensor, ECM
23 Ignition control module (ICM) -IC circuit malfunction Wiring open circuit/short circuit to positive, ICM, ECM
24 Vehicle speed sensor (VSS) Wiring open circuit/short circuit to ground, V55, ECM
25 Ignition control module (ICM) -24X signal circuit malfunction Wiring open circuit/short circuit to ground, ICM, ECM
26 Closed throttle position (CTP) switch -voltage low Wiring short circuit to ground, 15C actuator, ECM
27 Closed throttle position (CTP) switch -voltage high Wiring open circuit, 15C actuator, ECM
28 Transmission range (TR) switch Wiring open circuit/short circuit to ground, TR switch, ECM
29 Shift solenoid (SS) B Wiring open circuit/short circuit to ground, transmission mechanical fault, 55, ECM
30 Idle speed (ISC) actuator Wiring open circuit/short circuit to ground, throttle valve tight/sticking, 15C actuator, ECM
31 Manifold absolute pressure (MAP) sensor -voltage high, low vacuum indicated Wiring short circuit to positive, hose blockedlleaking, MAP sensor, ECM
32 Manifold absolute pressure (MAP) sensor -voltage low, high vacuum indicated Wiring open circuit/short circuit to ground, MAP sensor, ECM
33 Brake pedal position switch (BPP) -extended travel contacts -circuit malfunction Wiring, AB5
34 Manifold absolute pressure (MAP) sensor, low vacuum indicated Wiring open circuit, vacuum leak, ECM
35 Ignition control module (ICM) -reference low circuit malfunction Wiring open circuit/short circuit to positive, ICM, ECM
36 Exhaust gas recirculation (EGR) solenoid position sensor Wiring open circuit/short circuit to groundl short circuit to positive, EGR valve, ECM
37 Intake air temperature (IAT) sensor -high temperature indicated Wiring short circuit to ground, IAT sensor, ECM
38 Intake air temperature (IAT) sensor -low temperature indicated Wiring open circuit, IAT sensor, ECM
39 Torque converter clutch (TCC) -not engaging Wiring open circuit/short circuit to ground, BPP switch (TCC), supply wire, TCC solenoid, transmission mechanical fault, ECM
40 Power steering pressure (PSP) switch -open circuit Wiring open circuit/short circuit to ground, PSP switch, ECM
41 Ignition control module (ICM) -camshaft position (CMP) signal Wiring open circuit/short circuit to ground, CMP sensor, ICM, ECM
42 Heated oxygen sensor (H02S) 1, bank 2 -mixture lean Wiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, H02S
43 Heated oxygen sensor (H02S) 1, bank 2 -mixture rich Wiring open circuit, fuel pressure high, injector(s) leaking, H02S contamination, EVAP canister purge valve, TP sensor, EGR system, H02S
44 Heated oxygen sensor (H02S) 1, bank 1 mixture lean Wiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, H02S
45 Heated oxygen sensor (H02S) 1, bank 1 mixture rich Wiring open circuit, fuel pressure high, injector(s) leaking, H02S contamination, EVAP canister purge valve, TP sensor, EGR system, H02S
46 Long term fuel trim -imbalance bank 1/ bank 2 Injector(s) leaking, H02S, intake/exhaust system leaking
48 Exhaust gas recirculation (EGR) valve -flow Wiring open circuit/short circuit to ground, EGR system blocked, EGR valve, ECM
51 Engine control module (ECM) -PROM Insecure PROM, incorrect PROM, ECM
52 Engine control module (ECM) -memory reset Battery disconnected, wiring
53 Ignition control module (ICM) -4X reference circuit malfunction Wiring open circuit/short circuit to ground, ICM, ECM
55 Closed throttle position (CPT) -range Throttle valve tight/sticking, ISC actuator, TP sensor, cruise control cable
56 Turbine shaft speed (TSS) sensor -circuit malfunction Wiring, TSS sensor, ECM
57 Transmission fluid temperature (TFT) sensor -high temperature indicated Wiring short circuit to ground, TFT sensor, ECM
58 Immobilizer control module -fuel enable signal Wiring open circuit/short circuit to ground, immobilizer control module, ECM
59 Transmission fluid temperature (TFT) sensor -low temperature indicated Wiring open circuit, TFT sensor, ECM
60 Park/neutral input with cruise control engaged Driver error, wiring open circuit/short circuit to ground, TFP switch
61 Cruise control vent solenoid Wiring open circuit/short circuit to ground/ short circuit to positive, cruise control vent solenoid, cruise control servo, ECM
62 Cruise control vacuum solenoid Wiring open circuit/short circuit to ground/ short circuit to positive, cruise control vacuum solenoid, cruise control servo, ECM
63 Cruise control -set speed/vehicle speed mismatch Wiring open circuit/short circuit to ground! short circuit to positive, hoses leaking, cruise control servo, ECM
64 Cruise control -acceleration too high Slippery road conditions
65 Cruise control servo position sensor -circuit malfunction Wiring open circuit/short circuit to ground/ short circuit to positive, cruise control servo, ECM
66 Cruise control -engine speed too high Slippery road conditions, transmission mechanical fault
67 Cruise control switch -circuit malfunction Wiring open circuit/short circuit to ground/ short circuit to positive, cruise control switch, ECM
68 Cruise control servo position sensor -range Wiring, hoses blocked/leaking, brake pedal vacuum valve, cruise control servo, ECM
69 Cruise control disabled -TCS active Slippery road conditions
70 Throttle position (TP) sensor -circuit malfunction Wiring open circuit/short circuit to ground! short circuit to positive, TP sensor
71 Manifold absolute pressure (MAP) sensor -circuit malfunction Wiring open circuit/short circuit to ground! short circuit to positive, MAP sensor
73 Engine coolant temperature (ECT) sensor -circuit malfunction Wiring open cirCUit/short circuit to ground! short circuit to positive, ECT sensor
74 Intake air temperature (IAT) sensor -circuit malfunction Wiring open circuit/short circuit to ground! short circuit to positive, IAT sensor
75 Vehicle speed sensor (VSS) -circuit malfunction Wiring open circuit/short circuit, VSS
76 Transmission pressure control (PC) solenoid -circuit malfunction Wiring, PC solenoid, ECM
80 Thro,ttle position (TP) sensor -idle learned incomplete TP sensor/idle learn procedure not completed
83 Ignition control module (ICM) -4X124X signal circuit malfunction Electromagnetic interferenc~, wiring, CKP sensor(s), ICM, ECM
85 Idle learn throttle position -maximum position Throttle valve tight/sticking, TP sensor, ISC actuator
86 Transmission gear ratio Turbine shaft speed (TSS) sensor, VSS, transmission mechanical fault, ECM
88 Torque converter clutch (TCC) -stuck ON Wiring short circuit to ground, transmission internal wiring, TCC solenoid, ECM
89 Extended shift -adaptation limit reached Transmission mechanical fault
90 Brake pedal position (BPP) switch TCC Wiring open circuit/short circuit to ground, incorrectly adjusted, BPP switch, ECM
91 Park/neutral position (PNP) switch -circuit malfunction Wiring open circuit/short circuit to ground, incorrectly adjusted, PNP switch, ECM
93 Traction control system (TCS) -torque request circuit – Wiring open circuit/short circuit to ground/ short circuit to positive, ABS control module trouble code(s) stored, ECM
94 Shift solenoid (SS) A -ratio problem Wiring open circuit/short circuit to ground, SS, transmission mechanical fault, ECM
95 Engine stall or near stall detected ECM trouble code(s) stored, wiring, mechanical fault, transmission mechanical fault
96 Torque converter clutch (TCC) -over stressed ECM trouble codes stored, driver error
99 Cruise control servo -position high after disengagement Wiring, throttle valve tight/sticking, cruise control servo
106 Brake pedal position (BPP) switch, brake lamps -circuit malfunction Wiring, BPP switch
108 Engine control module (ECM) -PROM Insecure PROM, incorrect PROM
109 Engine control module (ECM) -memory reset Battery disconnected, wiring
110 Alternator ‘L’ terminal -circuit malfunction Wiring open circuit/short circuit to ground, alternator, battery temperature sensor, ECM
112 Engine control module (ECM) -EEPROM ECM
117 Shift solenoid (SS) A/B -circuit malfunction Wiring open circuit/short circuit to ground, transmission mechanical fault, ECM
119 Injector -circuit malfunction Wiring open circuit/short circuit to ground, injectors, ECM
120 A/C refrigerant temperature sensor low pressure side -circuit malfunction Wiring open circuit/short circuit to ground, NC refrigerant temperature sensor, ECM
121 A/C refrigerant temperature sensor high pressure side -circuit malfunction Wiring open circuit/short circuit to ground, A/C refrigerant temperature sensor, ECM
122 Engine coolant temperature -high with A/C request Cooling system
123 Low A/C refrigerant charge Low A/C refrigerant charge, wiring open circuit/short circuit to ground/short circuit to positive, A/C refrigerant low pressure switch, A/C amplifier, ECM
124 A/C request circuit -voltage high Wiring short circuit to positive, A/C refrigerant low pressure switch, A/C amplifier, ECM
125 A/C refrigerant high pressure switch -circuit malfunction Wiring short circuit to ground, A/C refrigerant high pressure switch, ECM
126 A/C refrigerant pressure -high Wiring short circuit to ground, A/C refrigerant temperature sensor (high side), A/C system
128 A/C high discharge temperature/pressure Wiring short circuit to ground, A/C refrigerant high pressure switch, A/C compressor clutch
131 Knock sensor (KS) -test failure Wiring, KS incorrectly fitted, KS, ECM
132 Knock sensor (KS) -circuit malfunction Wiring open circuit/short circuit to ground/ short circuit to positive, KS incorrectly fitted, KS, insecure PROM, ECM
133  CAN data bus -ABS/TCS Wiring, ABS control module trouble code(s) stored
134  CAN data bus -instrument panel Wiring open circuit, instrument panel
135  CAN data bus -A/C system Wiring open circuit, A/C amplifier
136  CAN data bus -diagnostic energy reserve module (DERM) Wiring open circuit, DERM