P0224Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
- 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. P0224 reports brief dropouts or jumps of sensor B that do not last long enough for the steady fault codes. No manufacturer using exactly this code was found: GM counts intermittent faults within P0222/P0223, and Ford's digital sensors report intermittent faults as P0124 for sensor A and P0229 for sensor C – after more than 0.4 s, while a steady fault needs over 4 s. Depending on frequency the result is jerking or brief limp mode.
- What you may notice
- Occasional jerking or power dips
- Brief limp mode
- Check engine light (sometimes only intermittently)
- Likely causes
- LikelyLoose contact or corroded connector at the throttle body
- LikelyWorn spot on the sensor track
- PossibleWire breaking from engine movement or vibration
- RareEngine module or ground connection
- 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: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.