P2164Throttle/Pedal Position Sensor B Maximum Stop Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2164 is the full-travel test for position signal B. When the throttle or pedal is held at its upper stop, sensor B has to report a value inside a calibrated band; a reading or learned maximum outside that band sets the code. Ford and GM call their second throttle body sensor B, so on those designs the code points at the throttle body, yet no manufacturer documents P2164 publicly. The nearest evidence is Ford's listing of the A version P2163 and a Visteon patent that learns the open stop and rejects values beyond about 80 to 110 degrees. On many throttle bodies the second track runs opposite to the first, so comparing A and B at full opening helps to tell a sensor fault from a mechanical block. P2113 checks the closed stop of B; P0220-P0223 cover its circuit.
- What you may notice
- Engine warning lamp on
- Power limited at high throttle demand
- Occasional limp mode
- Likely causes
- LikelySensor B track worn or drifted at the full-open end
- PossibleDeposits or a damaged stop limit the plate travel
- PossibleCorroded contact on the sensor B signal or reference pin
- RareEnd positions not relearned after part replacement
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.