Mass or Volume Air Flow Circuit Intermittent
The ECU detects intermittent signal dropouts or noise on the mass air flow (MAF) sensor circuit. The fault is not constantly present, suggesting a loose connection, intermittent wiring break, or a failing sensor under specific conditions (vibration, temperature).
Affected components
- Mass air flow sensor
- Maf connector
- Maf wiring
Common causes
- High likelihood: MAF connector loose or corroded
- Medium likelihood: Wiring chafed against engine components
- Medium likelihood: MAF sensor failing intermittently
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.