P2874
Clutch B Pressure Disengagement Too High
Clutch B disengagement pressure exceeds the calibrated maximum. The clutch may not separate cleanly.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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
Common causes
Ordered by how often each turns out to be the cause.
- Pressure regulator stuck at high outputCommon
- Control solenoid characteristic driftPossible
Parts involved
- Clutch B
- Clutch Actuator B
- Pressure Regulator
P2874 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.