Technical Definition:

Mass or Volume Air Flow A Circuit Range / Performance

Technical Description:

Possible Causes:

Possible Symptoms:

Mass or Volume Air Flow Circuit Range/Performance Problem

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Specific Makes:

– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke