U0682Lost Communication With Throttle/Pedal Position Sensor/Switch E
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Track E is usually the redundant second signal of the accelerator pedal, which the controller compares with track D before trusting any torque request. U0682 marks the loss of digital frames from that track. No manufacturer documents it publicly; GM and Ford wire pedal E analog, with Ford setting P2127/P2128 on voltage limits and P2138 when D and E disagree by more than 0.9 degrees. What matters to the driver is described in Ford's 2024 failure-mode table: with one track lost, demand is rate limited; with both gone, the engine ramps to a fixed high idle and ignores the pedal until the brake brings it back to idle. A digital pedal that sends both tracks in one SENT stream can therefore lose D and E together. CARB requires redundant pedal position data.
- What you may notice
- Check engine light and powertrain warning
- Delayed throttle response
- Fixed elevated idle with no pedal response if both tracks fail
- Likely causes
- LikelySignal or reference wire of track E damaged
- PossibleWater or corrosion in the pedal connector
- PossiblePedal module electronics failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.