What does code P2879 mean?

Q: What does code P2879 mean?

Clutch B Performance/Stuck Disengaged. P2879 indicates that the transmission control module has detected a performance problem with clutch B, or that the clutch is stuck in the disengaged position. The computer monitors speed sensors and clutch pressure or position to determine that clutch B is not engaging or holding as commanded, which can cause slipping, loss of drive, or harsh shifts.

DTC codes / P28xx · Transmission / P2879

P2879Clutch B Performance/Stuck Disengaged

P2879 indicates that the transmission control module has detected a performance problem with clutch B, or that the clutch is stuck in the disengaged position. The computer monitors speed sensors and clutch pressure or position to determine that clutch B is not engaging or holding as commanded, which can cause slipping, loss of drive, or harsh shifts.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.