P2116
Throttle/Pedal Position Sensor B Minimum Stop Performance
The minimum stop calibration of throttle position sensor B does not match the learned reference during ECU self-test. Sensor B is the redundant channel used to cross-check sensor A.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Common causes
Ordered by how often each turns out to be the cause.
- Carbon deposits affecting throttle motionCommon
- Internal sensor B faultPossible
Parts involved
- Throttle Position Sensor
- Throttle Body
P2116 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.