P2831Shift Fork A Position Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2831 is the general circuit code for the position signal of shift fork A in automated manual and dual-clutch gearboxes. How makers fill it varies widely. Mercedes-Benz uses P283100 for an electrical fault of the shift fork A position sensor in the 8G-DCT (transmission 724.1) and lists it among the codes of its guided repair tool. Ford's 2012 summary for the DPS6 dual-clutch box of Fiesta and Focus has no fork sensor at all: there P2831 marks a fault in the internal TCM chip that sets the current of the shift drum A motor, the drum that moves the forks for first, third and fifth gear. GM and Ford's TR9070 split position circuit faults into the specific codes P2833 to P2835 instead. Gear changes on the affected shaft may be refused.
- What you may notice
- Transmission warning, gear display may flash
- Odd gears unavailable or limp-home mode
- Delayed engagement or no drive when starting off
- Likely causes
- LikelyShift fork A position sensor electrically defective
- PossibleFault in the module's motor current controller (Ford DPS6)
- PossiblePoor contact at the sensor or module connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.