Mass or Volume Air Flow Circuit High Input
The MAF sensor reports an air flow value above the plausible maximum for current engine speed and load. Often indicates a sensor that is failing in a way that produces excess output, or a short to supply voltage in the signal path.
Affected components
- Mass air flow sensor
- Mass air flow sensor wiring
Common causes
- High likelihood: MAF sensor failed
- Medium likelihood: Signal wire shorted to supply voltage
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.