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GM OBD1 Trouble code listing.

Discussion in 'GM Powertrain' started by murdog94, Jan 8, 2011.

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  1. murdog94

    murdog94 New Member 1000 Posts 100 Posts

    On request here is a listing for OBD1 GM vehicles.

    GM OBD-1 Diagnostic Trouble Codes
    For 1995-previous model year EFI-equipped GM vehicles. NOTE: Some codes not supported on all models, consult your specific vehicle's service manual for the correct trouble code list and description for your application.
    DTC - 12 No distributor reference pulse (diagnostic test active)
    DTC - 13 Oxygen sensor circuit open or no activity
    DTC - 13 Left bank O2 sensor circuit open or no activity
    DTC - 14 Engine coolant temp sensor error (high temp indicated)
    DTC - 15 Engine coolant temp sensor error (low temp indicated)
    DTC - 16 System voltage too low
    DTC - 17 Camshaft position sensor error
    DTC - 21 Throttle Position sensor error (signal high)
    DTC - 22 Throttle position sensor error (signal low)
    DTC - 23 Intake air temp sensor error (low temp indicated)
    DTC - 24 Vehicle speed sensor error (open circuit or no activity)
    DTC - 25 Intake air temp sensor error (high temp indicated)
    DTC - 26 Quad Driver Module (QDM A) error
    DTC - 28 Auto transmission range pressure switch error
    DTC - 31 Wastegate solenoid circuit error
    DTC - 31 Gear Position Switch (PRNDL) error
    DTC - 32 EGR system failure
    DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)
    DTC - 34 MAP sensor circuit error (signal low indicating high vacuum)
    DTC - 35 IAC problem or idle error
    DTC - 36 MAF sensor error
    DTC - 36 24x Crankshaft position sensor circuit error
    DTC - 36 4T60-E Shifting Error
    DTC - 37 TCC brake switch circuit error
    DTC - 38 TCC brake switch circuit error
    DTC - 39 Clutch switch circuit error
    DTC - 39 TCC error
    DTC - 41 Ignition control error
    DTC - 41 MEM-CAL error
    DTC - 41 C³I Cam Sensor Signal error
    DTC - 42 Ignition bypass circuit error
    DTC - 43 Knock sensor error
    DTC - 44 Oxygen sensor error (lean condition indicated)
    DTC - 44 Left bank O2 sensor error (lean condition indicated)
    DTC - 45 Oxygen sensor error (rich condition indicated)
    DTC - 45 Left bank O2 sensor error (rich condition indicated)
    DTC - 46 Pass-Key II (VATS) system error - circuit out of freq range
    DTC - 47 UART (serial data) circuit error
    DTC - 51 PROM error
    DTC - 51 Incorrect MEM-CAL
    DTC - 52 Fuel cal-pak incorrect or missing
    DTC - 53 System voltage too high
    DTC - 53 Digital EGR Valve solenoid 1 error
    DTC - 54 Fuel pump circuit low voltage
    DTC - 54 Digital EGR Valve solenoid 2 error
    DTC - 55 ECM error
    DTC - 55 Digital EGR Valve solenoid 3 error
    DTC - 56 Quad Driver Module (QDM B) error
    DTC - 57 Boost Control error
    DTC - 58 Trans fluid temp sensor circuit error (low voltage)
    DTC - 58 VATS system error
    DTC - 59 Trans fluid temp sensor circuit error (high voltage)
    DTC - 61 A/C system performance
    DTC - 63 Right bank O2 sensor circuit error
    DTC - 63 MAP sensor circuit signal voltage high (low vacuum indicated)
    DTC - 64 Right bank O2 sensor lean exhaust indicated
    DTC - 64 MAP sensor circuit signal voltage low (high vacuum indicated)
    DTC - 65 Right bank O2 sensor rich exhaust indicated
    DTC - 66 A/C pressure sensor circuit error (low pressure indicated)
    DTC - 67 A/C pressure sensor circuit error
    DTC - 68 A/C clutch relay circuit error (shorted to ground)
    DTC - 69 A/C clutch relay circuit error (open circuit indicated)
    DTC - 69 A/C high pressure switch error
    DTC - 70 A/C pressure sensor circuit error (high pressure indicated)
    DTC - 71 A/C evaporator temp sensor circuit error (low temp indicated)
    DTC - 72 VSS signal circuit error
    DTC - 73 A/C evaporator temp sensor circuit error (high temp indicated)
    DTC - 75 Digital EGR solenoid #1 circuit error
    DTC - 76 Digital EGR solenoid #2 circuit error
    DTC - 77 Digital EGR solenoid #3 circuit error
    DTC - 79 Transmission fluid overtemp
    DTC - 80 Transmission component slipping
    DTC - 82 3x Crankshaft position sensor circuit error
    DTC - 85 PROM error
    DTC - 86 A/D error
    DTC - 87 EEPROM error (flash memory error)
    DTC - 90 TCC error
    DTC - 93 Transmission pressure control solenoid circuit error
    DTC - 96 Transmission system voltage low
    DTC - 98 Invalid PCM program
    DTC - 99 Invalid PCM program

    Here is the website for needed reference.
    http://www.gmtuners.com/OBD1_DTC.htm

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