Holden EFI - Auto Repair Codes

Scan Tool for Codes and Live Data for your Holden Engine from $199 USD

The information below may apply to Holden Commodore VL and many other models

Step 4

Holden EFI Code Reading

Connector Diagram

• To gain access to the ECU you will need to remove the passanger side kick panel.

Auto Repair Manual - How to read codes (No Special Tools Needed)

NOTE:For this system perform tests while engine is still running, turning the engine off during a fault code test will result in needing to repeat the test.

1 If possible run the engine to bring the oxygen sensor up to operating temperature then switch the engine off.

2 Turn ignition ON and check that the LEDs on the cars ECU are alight.

3 Gently turn the diagnostic mode selector fully clockwise.

4 Run engine and let it idle.

5 Read codes on the ECU as described in the Code Format Description below

Please Note:You will need to activate the systems shown by the codes (23, 24 and 31), while still in diagnostic mode, then re-read the codes. Any remaining codes are the valid ones.

6 Press the continue button to enter the code numbers and get the code description(s).

Code Format Diagram

Code Format Description

• Each code is made up of two series of flashes.

• The long flashes indicate the 'tens' digits.

• The short flashes indicate the 'ones' digits.

• A long pause separates each code sequence.

• Code Format Diagram shows code No. 12.

• If no long flashes are detected, the code is a straight count of short flashes.

To move to the next screen click on the Continue button

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Note on Example Model(s): Holden Commodore VL
The example model(s) shown, Holden Commodore VL for this auto repair service are only an indication to help you. There may be many other models that apply to this connector. Click above link to see the complete vehicle coverage list.