Possible Causes
- The powertrain control module has determined failures where some circuit quantity, reported via serial data, is not plausible given the operating conditions
- Air flow disruption at sensing element of mass air flow sensor
- Contamination at sensing element of mass air flow sensor
- Mass air flow sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Mass air flow sensor failure