Checking the components and wiring

Check the exhaust system for air leakage.

If no fault is discovered, try using a new rear heated oxygen sensor (HO2S), as a damaged rear heated oxygen sensor (HO2S) can cause a diagnostic trouble code (DTC) to be stored.

Remedy as necessary

Other information 

• See Checking for air leakage in the exhaust system
• See Heated oxygen sensor (HO2S), replacing
• See Contents

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Verification