P07FBStuck in Gear 10
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- P07FB means gear 10 cannot be disengaged: the transmission stays in 10th despite the command to leave it. No manufacturer document available to us uses it. The family is documented only for 8th gear on eight-speed dual-clutch gearboxes (Maserati MC20, Corvette 2020–23); no dual-clutch gearbox with ten gears and these codes is known. Ten-speed planetary automatics from Ford and GM report faults in 10th gear as a ratio code (P07F7, on Ford's 10R140 with 10th gear locked out) or through valve codes. The description follows the J2012 scheme and CARB's functional check of transmission outputs.
- What you may notice
- Transmission stays in gear 10 and will not downshift
- Weak take-off after stopping
- Transmission warning, limp mode
- Likely causes
- LikelyShift fork actuator or shift valve sticking (contamination)
- PossibleSystem pressure low or unstable (mechatronic pressure valve)
- PossibleShift fork, synchronizer or gear damaged
- RareFluid or filter contaminated
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.