P288D code meaning
Shift Fork B Calibration Not Learned
Powertrain system Generic code P28xx codes Check engine light
What P288D means
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.
P288D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P288D
- Reverse or even gears hesitant or unavailable
- Transmission warning, possibly MIL
Common causes of P288D
- Most likelyFork learn not carried out after TCM or mechatronic work
- PossibleDrum B position or motor fault aborting the learn
- Less likelyWorn or bent fork B, worn drum groove
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Shift fork bShift fork actuator bTCM
What each part of P288D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| 8D | The exact fault in that area. |
What to do next
- Note P288D 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 P288D
What does P288D mean?
P288D means "Shift Fork B Calibration Not Learned". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P288D?
Drive gently and only to a workshop. With P288D the car can go into limp mode (reduced power) to protect itself.
Will P288D fail an emissions test?
Yes, it can. P288D 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 P288D to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P288D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.