OBD-II code · Powertrain (generic, extended)
P2878 Clutch B Disengagement Time Too Fast
Clutch B releases faster than calibrated. Risk of torque interruption and driveline shock.
Is it safe to drive with P2878?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPressure regulator undershoots release ramp
- PossibleIncreased internal leakage at the actuator
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–10 h
- Emissions test
- Usually unaffected
- Parts involved
- Clutch B, Clutch Actuator B, Transmission Fluid
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.