Faulty Signal

Faulty signal

Checking the connector
Check the connector for the rear heated oxygen sensor (HO2S). Check for contact resistance and oxidation. Remedy if necessary.
Try a new rear heated oxygen sensor (HO2S) if the above corrective action does not remedy the fault.

Other information
- To access or replace the heated oxygen sensor (HO2S), see Heated oxygen sensor (HO2S), replacing Heated Oxygen Sensor (HO2S), Replacing
- Checking wiring and terminals Checking Wiring And Terminals.





Continue - Verification

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Verification




Verification

Verification

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




- Ignition off
- Reinstall the components, reconnect the connectors etc.
- Test drive the car according to the TRIP schedule, see Verifying repairs Verifying Repairs
- Do not switch off the engine after the test drive
- Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the rear heated oxygen sensor (HO2S)
- There must not be any faults when the diagnostic is complete.









Was a fault detected?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the connector

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