The MAP signal is below the expected range. The driver may notice stalling, weak power or a hard start.
Likely causes, most common first
- Open in the 5 volt reference or signal wire
- Faulty MAP sensor
- Poor connector contact
- Short to ground in the wiring
Parts usually involved
- MAP sensor
- Sensor connector
- Wiring harness
Test before you replace
Check the 5 volt reference, ground and signal at the sensor connector.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.