P0104
Mass or Volume Air Flow Sensor A Circuit Intermittent
Severity: MEDIUM
Symptoms
- Unstable idle speed
- Periodic jerks during acceleration
- Increased fuel consumption
- Difficulty starting the engine
- Intermittent power drop
- Black smoke from the exhaust pipe
Causes
- Mass air flow sensor dirty
- Oxidation or corrosion of sensor contacts
- Damage to the wiring to the mass air flow sensor
- Poor sensor connector connection
- Vibrations causing periodic contact breaks
- Oil or dirt on the sensor element
- Worn mass air flow sensor
How to Fix
- Check the MAF sensor connector for a secure connection.
- Clean the connector contacts from oxides and corrosion
- Remove and clean the sensor with a special cleaner for mass air flow sensor
- Check the integrity of the wiring to the sensor with a multimeter
- Secure wiring from vibrations and mechanical damage
- If necessary, replace damaged wires
- If cleaning does not help, replace the MAF sensor
- Clear error codes and test drive