Checking the intake system

Check that the hoses and hose connectors between the mass air flow (MAF) sensor and the throttle unit are not leaking or defective.

Check that the boost pressure sensor is correctly mounted. Check for air leakage around the component.

HINT: This diagnostic trouble code can be caused by a damaged mass air flow sensor. 

Remedy as necessary.

Other information 

• See Check for air leaks in the intake system
• See Throttle body (TB), cleaning
• See Mass air flow (MAF) sensor, replacing

Fig 1: Identifying Mass Air Flow (MAF) Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Verification