P2868Shift Fork E Position Sensor Incorrect Neutral Position Indicated
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2868 concerns the neutral information from the fork E sensor. The signal is electrically valid, but the module judges that the neutral it shows does not fit the real state of the fifth fork, either neutral claimed while a gear on that fork transmits drive, or a fork that seems engaged where neutral has been commanded. No manufacturer documents P2868 publicly. GM's Corvette software, the one published strategy with a fifth rod, compares an unloaded rod 5 with its learned neutral and engaged bands but books deviations under the consistency code P2864; the Mercedes 8G-DCT fork E entries do not include this number either. Monitoring of this input is still demanded by CARB 13 CCR 1968.2. Lost learned values and a shifted sensor magnet are the usual suspects.
- What you may notice
- Gears served by fork E refused
- Gear display does not match the gear actually engaged
- Warning lamp with limp-home program
- Likely causes
- LikelyLearned neutral of fork E lost after module swap or repair
- PossibleMagnet or target on the fork E rod displaced
- RareWorn detent or bent fork moving the rest position
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.