P2836Shift Fork B 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
- P2836 is the umbrella circuit code for the shift fork B position input. Mercedes-Benz stores P283600 when its 8G-DCT dual-clutch transmission (724.1) detects an electrical defect at the fork B sensor and includes it in the code set evaluated by its Intelligent Predictive Repair routine in XENTRY. Ford's 2012 summary gives the number a different job on the DPS6 gearbox of Focus and Fiesta: a fault in the motor-current chip (ATIC) inside the TCM that drives the second shift drum, which according to its stuck-in-gear codes serves second, fourth, sixth and reverse. GM's Corvette software and Ford's TR9070 never use P2836 and report fork B problems through P2837 to P283A. Usually the gears moved by fork B are withdrawn and a substitute program takes over.
- What you may notice
- Transmission warning and stored code
- Gears of fork B skipped or unavailable
- Delayed engagement from Park or no drive (Ford DPS6)
- Likely causes
- LikelyElectrical defect in the fork B position sensor (Mercedes 8G-DCT)
- PossibleFailed current-control chip for the second shift drum motor in the TCM (Ford DPS6)
- PossibleCorroded or loose contacts between sensor and module
- 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.