Fault-Tracing

Fault-tracing

Checking air leakage and component

Note! This diagnostic trouble code (DTC) can be stored if installation of the front and rear oxygen sensors is mixed up. Mixing up regards the physical installation of the heated oxygen sensors, where the front one is screwed into place where the rear one is to be located, and vice versa. The connectors and cable harness are correctly connected. These cannot be mixed.

Hint: Check the part nos. of the components visually and compare with the parts register in VIDA. Ensure that they are installed in the correct location.

Check the exhaust system for air leakage.
If no air leakage is found on the exhaust system, replace the front heated oxygen sensor (bank 2).
If the above troubleshooting does not fix the problem, try with a new front catalytic converter (bank 2).
Remedy as necessary.

Other information
- Exhaust manifold, left-hand, B8444S Exhaust Manifold, Left-Hand
- Oxygen sensor (Catalyst monitor sensor), B8444S Service and Repair
- Intake system, check, B8444S, TF-80SC AWD Intake System, Check





Continue - Verification

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking air leakage and component

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.

- Start the engine and let it idle until it has reached operating temperature (approx. 80 °C).
- Test-drive the vehicle on road. Drive in float mode (normal road load), constant speed around 70-90 km/h for approx. 30-40 seconds.
- Connect VCT2000 to the data link connector without turning off the engine.

Note! If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated.

Read off the diagnostic status and trouble status for the diagnostic trouble code.
Check that the diagnosis is "Implemented" and that the trouble status is "No malfunction found". If the trouble status is "Malfunction found", this indicates defective function.





Trouble status shows "No malfunction found"?

Yes - Troubleshooting complete for this DTC

No - Fault-tracing information

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