Mass or Volume Air Flow Sensor A Circuit High
The air flow meter (MAF sensor) measures how much air goes into the engine and sends it to the ECU as an electrical signal.
What the car has detected
The air flow meter signal is higher than the engine allows: it is usually a short in the wire or the sensor itself.
The ECU uses default values and the car usually has less power. It can be driven gently to a garage.
Symptoms
- Engine warning light on
- Less power when accelerating
Possible causes
- Shorted air flow meter wire
- Failed MAF sensor
Checks for the garage
- Check the air flow meter wiring and connector
- Compare measured and expected air in live data
Next step
Ask for the air flow meter wiring and connector to be checked before it is replaced.
Go to a garage in the next few days. Reading the live data needs a diagnostic tool.