Checking Components

Check the exhaust system for air leakage.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information 

• see AIR LEAKAGE EXHAUST SYSTEM, CHECK
• see OXYGEN SENSOR (CATALYST MONITOR SENSOR)

Fig 1: Identifying 4-Bit Connector

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA (Volvo Scan Tool)

Courtesy of VOLVO CARS CORPORATION

Fig 3: Front Heated Oxygen Sensor

Courtesy of VOLVO CARS CORPORATION

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  Refer to VERIFICATION