The MAF signal is lower than the expected range. The driver may notice stalling, weak acceleration or a hard start.
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
- Sensor connector
- Wiring harness
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.