The MAF signal is lower than the expected range. The driver may notice stalling, weak acceleration or a hard start.
Causes vary by car. Test before you order a part.
Likely causes, most common first
- Open or damaged wiring
- Faulty MAF sensor
- Poor connector contact
- Large air leak near the sensor
Parts usually involved
- MAF sensor Find at suppliers
- Sensor connector Find at suppliers
- Wiring harness Find at suppliers
Test before you replace
Check power, ground and signal at the connector with the key on and the engine running.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.