P288DShift Fork B Calibration Not Learned
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P288D is the fork B counterpart of P287B: the stored learn values that tell the control unit where fork B or its drum sits in each gear are missing or rejected. No manufacturer documents P288D publicly, and Ford's 2014 catalogue still knew only one fork calibration code, P287B, which suggests the split into A and B came later. On Ford's DPS6, drum B handles reverse plus the 2nd, 4th and 6th gears, with detents near 10, 90, 190 and 280 degrees, so a missing reference mainly hits reverse and the even gears. CARB 13 CCR 1968.2 requires transmission functions of this kind to be monitored. Before relearning, check for drum B position or motor faults such as P2837 or P2836, because the learn usually aborts while those are present; after a TCM swap the procedure is simply part of the job.
- What you may notice
- Reverse or even gears hesitant or unavailable
- Transmission warning, possibly MIL
- Likely causes
- LikelyFork learn not carried out after TCM or mechatronic work
- PossibleDrum B position or motor fault aborting the learn
- RareWorn or bent fork B, worn drum groove
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.