Fault-Tracing Information

Fault-tracing

Checking air leakage and component
Check the exhaust system for air leakage.
If no air leakage is found on the exhaust system, replace the front heated oxygen sensor (bank 1).
If the above troubleshooting does not fix the problem, try with a new front catalytic converter (bank 1).
Remedy as necessary.

Other information:
- Exhaust manifold, B6304T4 Service and Repair
- Oxygen sensor (Catalyst monitor sensor), B6304T4 Service and Repair





Continue - Verification

-------------------------------------------------

Fault-tracing information

Attempt New Test - Checking air leakage and component

-------------------------------------------------

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 - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

-------------------------------------------------