P0223Throttle/Pedal Position Sensor/Switch B Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- With electronic throttle control the throttle body carries two position sensors, A and B, usually with opposite or offset signals, and the engine module compares them (correlation code P2135). GM and Ford give the pedal sensors their own codes (P2120 ff), so B is in practice the second throttle sensor. P0223 means the signal of sensor B is above its upper limit – GM above 4.59 V, Ford above 4.75 V – typically an open sensor ground, a signal shorted to 5 V or battery voltage, or an open signal wire on a pulled-up input. Both detect it within about a second and switch the warning light on in the first trip. The module carries on with sensor A, limits throttle opening and power and switches off cruise control.
- What you may notice
- Check engine light and throttle warning light
- Reduced power, limp mode
- Poor throttle response, jerking
- Cruise control disabled
- Likely causes
- LikelySensor ground open
- LikelySensor B or throttle body faulty
- PossibleSignal shorted to 5 V or 12 V in the harness
- RareEngine module faulty
- 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: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.