Checking the Mass Air Flow (MAF) Sensor

Checking The Mass Air Flow (MAF) Sensor







- Engine running.

Check and compare the calculated air mass with the actual, read-out from mass air flow sensor.

Try measuring at different speeds (rpm).

HINT: Differences of more than 20 % between the signals indicate a defective mass air flow sensor.

NOTE: When replacing mass air flow sensor. Repeat the check to verify that the replacement solved the problem.

Remedy as necessary.

Other Information
- Mass air flow (MAF) sensor, replacing

Is the function OK?

YES: Refer to Verification. Verification
NO: Refer to Trouble Code Descriptions. Diagnostic Trouble Code Descriptions