U0683 code meaning
Lost Communication With Throttle/Pedal Position Sensor/Switch F
Network system Generic code U06xx codes Check engine light
What U0683 means
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.
U0683 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0683
- Check engine light
- Reduced power or limited throttle response
- Additional correlation codes possible
Common causes of U0683
- Most likelyWiring for input F open, shorted or chafed
- PossibleConnector at the pedal or sensor module loose or corroded
- PossibleSensor electronics for input F failed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Throttle pedal sensor fVehicle bus wiring
What each part of U0683 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 83 | The exact fault in that area. |
What to do next
- Note U0683 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0683
What does U0683 mean?
U0683 means "Lost Communication With Throttle/Pedal Position Sensor/Switch F". A third pedal track F is rare. It is a generic code, so it means the same on every make.
Is it safe to drive with U0683?
Drive gently and only to a workshop. With U0683 the car can go into limp mode (reduced power) to protect itself.
Will U0683 fail an emissions test?
Yes, it can. U0683 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is U0683 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0683 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.