Mass or Volume Air Flow Circuit Low Input
The MAF sensor reports an air flow value below the plausible minimum for current engine speed and load. The ECU substitutes a calculated load value while the fault is active.
Affected components
- Mass air flow sensor
- Intake duct
Common causes
- High likelihood: MAF sensor failed
- Medium likelihood: MAF connector loose or disconnected
- Low likelihood: Signal wire shorted to ground
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.