What does code P2109 mean?

Q: What does code P2109 mean?

Throttle/Pedal Position Sensor 'A' Minimum Stop Performance. P2109 means the engine computer has detected that the throttle body's internal 'A' position sensor is not reaching its expected minimum mechanical stop, so the learned closed-throttle reference point is out of range. The computer compares the sensor voltage at key-on and during closed-throttle operation against a factory-programmed minimum limit and sets this code when the signal stays too high or too low.

DTC codes / P21xx · Fuel and air metering / P2109

P2109Throttle/Pedal Position Sensor 'A' Minimum Stop Performance

P2109 means the engine computer has detected that the throttle body's internal 'A' position sensor is not reaching its expected minimum mechanical stop, so the learned closed-throttle reference point is out of range. The computer compares the sensor voltage at key-on and during closed-throttle operation against a factory-programmed minimum limit and sets this code when the signal stays too high or too low.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.