VN VP VR, V6 V8 error codes / DTCs (11P & 12P version)

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
User avatar
Posts: 6343
Joined: Mon Oct 08, 2012 6:41 pm
Location: Kyneton, Vic

VN VP VR, V6 V8 error codes / DTCs (11P & 12P version)

Postby vlad01 » Sat Aug 10, 2019 1:31 pm

Thought I would make a detailed list of the error codes since it has become apparent that we don't have a good list for people to use on this forum that is easy to find.

I used to search in google but now the results won't even come up anymore for anything other than a general list (no details on conditions that trigger the DTC)

This list is incomplete so feel free to post codes that are missing with condition description and I will add them. I aim to have this list cover 12P/11P so it covers all from custom code down to VN stock cars that are MAP based. Perhaps making this a universal DTC list for all MAP based cars assuming there is no overlap on the code numbers from model to model. There is obviously a heap of auto trans stuff missing at this stage plus a few engine related DTCs.




12. No spark pulses at CPU or else good system, no codes.


13. Oxygen sensor output remained at .35-.55 volts for more than one minute after warmup. Possible open circuit.


14. Coolant sensor indicated a temperature above 130C for 3 seconds after engine ran for 20 seconds. Probably a short.


15. Coolant sensor indicated a temperature below -30C for 3 seconds when MAT > - 13 or engine running over 1 minute. Probably open circuit.


16. Coolant sensor voltage unstable. The engine has been operating for more than one minute, and ECT reading changes more than 15 degrees C in 100 milliseconds.


17. ECU error (coolant sensor circuit). Engine operating for more than one minute, and the pull-up resistor inside the PCM switches and there is no change in the engine coolant temperature signal.


19. TPS sticking open. Sensor percentage of opening angle indicated is greater than the RPM that can be reached with a manifold absolute pressure reading less than 65 kPa for 10 seconds.


21. Throttle pos sensor above 2.5 volts for 2 seconds when engine speed below 1600 rpm.


22. Throttle pos sensor below .2 volt for 2 seconds while engine running


23. MAT sensor shows < -30 degrees C for 3 seconds after engine running 1 minute or coolant > 30C. Probably an open circuit.


24. No speed sensor pulses when engine between 2000-4000 rpm, throttle closed, high vacuum, not in neutral and all for 5 seconds.


25. MAT sensor showed above 145 degrees C for 2 seconds after engine ran for over 1 minute. Possible short circuit.


26. MAT Voltage Unstable


31. Theft Deterrent Signal Missing


33. MAP sensor voltage too high (> 4.00 v). Possible vacuum leak to sensor or faulty sensor.


34. MAP sensor voltage too low (< 0.25 v) with ignition on or engine running >1200 rpm and throttle open >20%.


35. Closed throttle idle speed is more than 75 rpm above or below correct value for more than 45 seconds.


41. No Crankshaft reference pulses. Ignition voltage < 11 volts etc.


42. Open or short on EST or BYPASS line to ignition module.


43. Engine Knock Sensor open or shorted.


44. O2 sensor showed < 0.250 volt for over 20 seconds while operating closed loop.


45. O2 sensor showed > 0.550 volt for over 50 seconds while in closed loop with engine running over 1 minute and throttle open more than 2%.


46. No reference pulses. Map sensor input detects at least 3 kPa engine vacuum, no reference pulses and (battery voltage <11V ?) for 2 seconds.


47. No 18x reference signal. 80 crank revolutions detected by reference signal, while no 18x detected.


48. Cam angle sensor. V6 VR A/T only


49. Cam angle sensor intermittent. V6 VR A/T only


51. Checksum error. (Memcal error)


52. System voltage too high for long period. > 16V for 109 min. (A/T only?) A/T is forced into 3rd


53. Car's alternator has produced >17.1 volts for over 2 seconds. Check charging system.


54. System voltage unstable. Voltage changes more than 3V in 100ms.


55. ECU A to D error. Check ECU grounds, or excessive input voltage.


56. Running lean under load. The engine has been operating longer than two minutes and the PCM detects low oxygen sensor voltage for 10 seconds during "power enrichment" modes of operation.


57. Injector voltage monitor fault. Injector voltage monitor line voltage drops more than 2.5 volts, the PCM will operate on an incorrected value for 5 seconds until the DTC 57 is set. After the DTC 57 is set, the PCM will use the battery feed as the voltage value
Last edited by vlad01 on Mon Aug 12, 2019 8:13 pm, edited 1 time in total.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

Site Admin
User avatar
Posts: 5712
Joined: Sat Feb 28, 2009 8:34 pm

Re: VN VP VR, V6 V8 error codes (12P version? WIP)

Postby antus » Mon Aug 12, 2019 4:57 pm

Code 26 - MAT sensor unstable
Code 31 - Theft deterrent input missing
Code 32 - Not used

Code 46 - No ref pulses
Code 48 - Not Used
Code 49 - Not used

Code 54 - Battery voltage unstable

Also - 51 Is eprom checksum failure. In the realtime bins the calibration area is not checksummed so that you can edit this data in realtime, so only the operating system part is checked. In the factory bins the whole lot is checked.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

User avatar
Posts: 6343
Joined: Mon Oct 08, 2012 6:41 pm
Location: Kyneton, Vic

Re: VN VP VR, V6 V8 error codes (12P version? WIP)

Postby vlad01 » Mon Aug 12, 2019 8:15 pm

I have fixed a few that were wrong and added a few more. There is a heap more for A/T related stuff used on the 424 pcm.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

Site Admin
User avatar
Posts: 5712
Joined: Sat Feb 28, 2009 8:34 pm

Re: VN VP VR, V6 V8 error codes (12P version? WIP)

Postby antus » Tue Aug 13, 2019 8:45 am

From 11P:

Code 27 - Pressure switch manifold open
Code 28 - Pressure switch manifold

Code 36 - Vacuum leak
Code 37 - Brake On
Code 38 - Brake Off
Code 39 - TCC Off

Code 58 - Transmission temperature High
Code 59 - Transmission temperature Low

Code 61 - Turbo Boost Sensor High [Not Implemented]
Code 62 - Turbo Boost Sensor Low [Not Implemented]
Code 63 - Barometric pressure High
Code 64 - Barometric pressure Low

Code 66 - 3-2 QDM2/Solenoid failure
Code 67 - TCC Enable QDM2/Solenoid failure
Code 68 - Transmission Component Slipping
Code 69 - TCC On
Code 71 - Engine Speed Low
Code 72 - Output speed loss
Code 73 - Force motor current
Code 74 - Input Speed Sensor
Code 75 - System voltage Low

Code 77 - MNP switch

Code 79 - Transmission Hot

Code 81 - QDM1 fault - Shift B fault
Code 82 - QDM1 fault - Shift A fault
Code 83 - QDM1 fault - TCC Solenoid Failure

Code 85 - Ratio-undefined region
Code 86 - Solenoid B stuck ON
Code 87 - Solenoid B stuck OFF
Code 89 - Maximum adaptive long shift
Code 91 - QDSM Fault
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Return to Holden ALDL ECUs

Who is online

Users browsing this forum: No registered users and 5 guests