U0683Lost Communication With Throttle/Pedal Position Sensor/Switch F
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- A third pedal track F is rare. It appears where a pedal module carries three signals, or where the F letter is used for an extra switch or a throttle input; the correlation codes P2139 (D/F), P2140 (E/F) and P212F (F/G) show that the scheme pairs F both with the pedal tracks and with throttle sensor G. U0683 means that digital frames for input F have stopped or fail their checks. No manufacturer documents the code publicly, and neither the Ford nor the GM tables examined contain any F input at all: both work with two pedal tracks, D and E. Analog faults of F would be P2130 to P2134. The effect depends on the role of F; with one redundant track gone, the controller usually limits power and the warning lamp comes on.
- What you may notice
- Check engine light
- Reduced power or limited throttle response
- Additional correlation codes possible
- Likely causes
- LikelyWiring for input F open, shorted or chafed
- PossibleConnector at the pedal or sensor module loose or corroded
- PossibleSensor electronics for input F failed
- 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: €60 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.