What does code P2856 mean?

Q: What does code P2856 mean?

Clutch B Pressure Charge Performance. P2856 indicates that the transmission control module has detected a performance problem with the pressure charge for clutch B, meaning the clutch is not engaging or holding pressure as commanded. The computer monitors hydraulic pressure and clutch slip to determine that the clutch B circuit is not achieving the expected pressure within a specified time or under specific conditions.

DTC codes / P28xx · Transmission / P2856

P2856Clutch B Pressure Charge Performance

P2856 indicates that the transmission control module has detected a performance problem with the pressure charge for clutch B, meaning the clutch is not engaging or holding pressure as commanded. The computer monitors hydraulic pressure and clutch slip to determine that the clutch B circuit is not achieving the expected pressure within a specified time or under specific conditions.

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.