The MAP reading does not fit engine speed and load. The driver may notice poor idle, weak power or high consumption.
Likely causes, most common first
- Vacuum leak or split MAP hose
- Faulty MAP sensor
- Blocked sensor port
- Wiring fault
Parts usually involved
- MAP sensor
- Vacuum hose
- Sensor connector
Test before you replace
Compare the MAP reading with the key on engine off against local air pressure and test the hose for vacuum.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.