OBD-II code · Powertrain (generic, extended)
P2711 Unexpected Mechanical Gear Disengagement
The transmission disengaged mechanically without a corresponding command. The vehicle can free-wheel, which is a safety concern. Often a hydraulic or hardware fault inside the gearbox.
Is it safe to drive with P2711?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyClutch piston seal failure releases gear
- PossibleSudden hydraulic pressure loss
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 4–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Transmission Internal, Hydraulic Control Unit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.