List of all of the GM OBD1 codes
02-26-2010, 07:17 PM
#1
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Thread Starter
List of all of the GM OBD1 codes
thought this might be useful, Here ya go. the blue means the code isn't aplicable to all models.
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
-Eric J.
Originally Posted by GM tuners .com
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
-Eric J.
Last edited by ericjon262; 02-26-2010 at 10:38 PM.
08-26-2012, 03:48 PM
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Re: List of all of the GM OBD1 codes
I'm getting an OBD1 code 11, with a CEL, on my 1995 Firebird Formula... Anyone have any ideas wth is going on with it??
Gary B>
Darkside
Gary B>
Darkside
Last edited by Darksides Calli; 08-26-2012 at 03:53 PM.
08-27-2012, 09:26 PM
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Car: 1988 IROC-Z Camaro, 1981 Trans Am
Engine: 350 TPI, 301 N/A
Transmission: 700r4, 350thm
Re: List of all of the GM OBD1 codes
12 is normal, you should always get 12.
Heres another site with similar info that ive found useful:
http://www.theimportkiller.com/forum...hp?topic=420.0
08-28-2012, 10:43 PM
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Re: List of all of the GM OBD1 codes
Found out that OBD-1 has a legitimate code 11, for the Malfunction indicator lamp circuit.. somebody posted the details on my other thread here...
https://www.thirdgen.org/forums/tech...rmula-obd.html
https://www.thirdgen.org/forums/tech...rmula-obd.html
Last edited by Darksides Calli; 08-28-2012 at 10:48 PM.
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11-05-2015, 08:51 AM
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Re: List of all of the GM OBD1 codes
The same code can mean something totally different if the car came with a carb.
Here is a more comprehensive list:
GM 2 Digit codes for 82 and up (non OBD-II) code definition
12- diagnostic mode
13- 02 sensor or circuit
14- coolant sensor or circuit/ high temp indicated
15- coolant sensor or circuit/ low temp indicated
16- system voltage out of range
19- crankshaft position sensor or circuit
21- throttle position sensor or circuit- voltage high
22- throttle position sensor or circuit- voltage low
------------------------------------------------------------
23- mixture control (m/c) solenoid or circuit (carbureted models)
23- manifold air temperature (mat) sensor or circuit (1990 and earlier models)
23- intake air temperature (iat) sensor circuit (fuel-injected models)
------------------------------------------------------------
24- vehicle speed sensor (vss) or circuit
------------------------------------------------------------
25- manifold air temperature (mat) sensor or circuit - high temperature indicated (1990 and earlier models)
25- intake air temperature (iat) sensor or circuit - high temperature indicated (1991 and later models)
------------------------------------------------------------
26- quad driver module circuit
27- quad driver module circuit
28- quad driver module circuit
29- quad driver module circuit
31- park/neutral position (pnp) switch circuit
------------------------------------------------------------
32- baro sensor or circuit (carbureted models)
32- egr circuit (fuel-injected models)
------------------------------------------------------------
33- manifold absolute pressure (map sensor signal voltage high
33- mass air flow (maf) sensor or circuit - excessive airflow indicated
------------------------------------------------------------
34- manifold absolute pressure (map) sensor signal voltage low
34- mass air flow (maf) sensor signal - low airflow indicated
------------------------------------------------------------
35- idle speed control (isc) switch or circuit (shorted) (carbureted models)
35- idle air control (iac) valve/ circuit
------------------------------------------------------------
38- brake switch circuit
39- torque converter clutch (tcc) circuit
------------------------------------------------------------
41- no distributor signals to ecm, or faulty ignition module ( carbureted models)
41- cylinders select error- mem-cal or ecm problem ( fuel-injected models
41- cam sensor circuit (3.8 engine)
------------------------------------------------------------
42- bypass or electronic spark timing (est) circuit
------------------------------------------------------------
43- low voltage at ecm terminal l (carbureted models)
43- knock sensor circuit
------------------------------------------------------------
44- oxygen sensor or circuit - lean exhaust detected
45- oxygen sensor or circuit - rich exhaust detected
46- power steering pressure switch circuit
48- misfire diagnosis
51- prom, mem-cal or ecm problem
52- calpak or ecm problem
------------------------------------------------------------
53- egr fault (carbureted models only)
53- system over-voltage (ecm over 17.7 volts)
------------------------------------------------------------
54- mixture control (m/c) solenoid or circuit (carbureted models)
54- fuel pump circuit (1986 and later models)
------------------------------------------------------------
55- oxygen sensor circuit or ecm
55- fuel lean monitor (2.2l engine)
------------------------------------------------------------
61- oxygen sensor signal faulty (possible contaminated sensor)
62- transaxle gear switch signal circuits
63- manifold absolute pressure (map) sensor voltage high (low vacuum detected)
64- manifold absolute pressure (map) sensor voltage low (high vacuum detected)
66- pressure sensor or circuit air conditioning
67- A/C pressure sensor circuit error
68- A/C clutch relay circuit error (shorted to ground)
69- A/C clutch relay circuit error (open circuit indicated)
69- A/C high pressure switch error
70- A/C pressure sensor circuit error (high pressure indicated)
71- A/C evaporator temp sensor circuit error (low temp indicated)
72- VSS signal circuit error
73- A/C evaporator temp sensor circuit error (high temp indicated)
75- Digital EGR solenoid #1 circuit error
76- Digital EGR solenoid #2 circuit error
77- Digital EGR solenoid #3 circuit error
79- Transmission fluid overtemp
80- Transmission component slipping
82- 3x Crankshaft position sensor circuit error
85- PROM error
86- A/D error
87- EEPROM error (flash memory error)
90- TCC error
93- Transmission pressure control solenoid circuit error
96- Transmission system voltage low
98- Invalid PCM program
99- Invalid PCM program
you're welcome
Here is a more comprehensive list:
GM 2 Digit codes for 82 and up (non OBD-II) code definition
12- diagnostic mode
13- 02 sensor or circuit
14- coolant sensor or circuit/ high temp indicated
15- coolant sensor or circuit/ low temp indicated
16- system voltage out of range
19- crankshaft position sensor or circuit
21- throttle position sensor or circuit- voltage high
22- throttle position sensor or circuit- voltage low
------------------------------------------------------------
23- mixture control (m/c) solenoid or circuit (carbureted models)
23- manifold air temperature (mat) sensor or circuit (1990 and earlier models)
23- intake air temperature (iat) sensor circuit (fuel-injected models)
------------------------------------------------------------
24- vehicle speed sensor (vss) or circuit
------------------------------------------------------------
25- manifold air temperature (mat) sensor or circuit - high temperature indicated (1990 and earlier models)
25- intake air temperature (iat) sensor or circuit - high temperature indicated (1991 and later models)
------------------------------------------------------------
26- quad driver module circuit
27- quad driver module circuit
28- quad driver module circuit
29- quad driver module circuit
31- park/neutral position (pnp) switch circuit
------------------------------------------------------------
32- baro sensor or circuit (carbureted models)
32- egr circuit (fuel-injected models)
------------------------------------------------------------
33- manifold absolute pressure (map sensor signal voltage high
33- mass air flow (maf) sensor or circuit - excessive airflow indicated
------------------------------------------------------------
34- manifold absolute pressure (map) sensor signal voltage low
34- mass air flow (maf) sensor signal - low airflow indicated
------------------------------------------------------------
35- idle speed control (isc) switch or circuit (shorted) (carbureted models)
35- idle air control (iac) valve/ circuit
------------------------------------------------------------
38- brake switch circuit
39- torque converter clutch (tcc) circuit
------------------------------------------------------------
41- no distributor signals to ecm, or faulty ignition module ( carbureted models)
41- cylinders select error- mem-cal or ecm problem ( fuel-injected models
41- cam sensor circuit (3.8 engine)
------------------------------------------------------------
42- bypass or electronic spark timing (est) circuit
------------------------------------------------------------
43- low voltage at ecm terminal l (carbureted models)
43- knock sensor circuit
------------------------------------------------------------
44- oxygen sensor or circuit - lean exhaust detected
45- oxygen sensor or circuit - rich exhaust detected
46- power steering pressure switch circuit
48- misfire diagnosis
51- prom, mem-cal or ecm problem
52- calpak or ecm problem
------------------------------------------------------------
53- egr fault (carbureted models only)
53- system over-voltage (ecm over 17.7 volts)
------------------------------------------------------------
54- mixture control (m/c) solenoid or circuit (carbureted models)
54- fuel pump circuit (1986 and later models)
------------------------------------------------------------
55- oxygen sensor circuit or ecm
55- fuel lean monitor (2.2l engine)
------------------------------------------------------------
61- oxygen sensor signal faulty (possible contaminated sensor)
62- transaxle gear switch signal circuits
63- manifold absolute pressure (map) sensor voltage high (low vacuum detected)
64- manifold absolute pressure (map) sensor voltage low (high vacuum detected)
66- pressure sensor or circuit air conditioning
67- A/C pressure sensor circuit error
68- A/C clutch relay circuit error (shorted to ground)
69- A/C clutch relay circuit error (open circuit indicated)
69- A/C high pressure switch error
70- A/C pressure sensor circuit error (high pressure indicated)
71- A/C evaporator temp sensor circuit error (low temp indicated)
72- VSS signal circuit error
73- A/C evaporator temp sensor circuit error (high temp indicated)
75- Digital EGR solenoid #1 circuit error
76- Digital EGR solenoid #2 circuit error
77- Digital EGR solenoid #3 circuit error
79- Transmission fluid overtemp
80- Transmission component slipping
82- 3x Crankshaft position sensor circuit error
85- PROM error
86- A/D error
87- EEPROM error (flash memory error)
90- TCC error
93- Transmission pressure control solenoid circuit error
96- Transmission system voltage low
98- Invalid PCM program
99- Invalid PCM program
you're welcome
Last edited by Mike M; 11-05-2015 at 08:57 AM.
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