What does code P28C6 mean?

Q: What does code P28C6 mean?

Clutch A Phase U-V-W Circuit/Open. P28C6 is a generic powertrain code indicating that the transmission control module (TCM) has detected an open circuit or abnormal electrical condition in the phase U, V, or W wiring for clutch A, which is part of the hybrid or dual-clutch transmission system. The computer monitors the current and voltage on these phases and sets the code when the expected electrical signature is missing, often due to a broken wire, poor connection, or failed clutch actuator.

DTC codes / P28xx · Transmission / P28C6

P28C6Clutch A Phase U-V-W Circuit/Open

P28C6 is a generic powertrain code indicating that the transmission control module (TCM) has detected an open circuit or abnormal electrical condition in the phase U, V, or W wiring for clutch A, which is part of the hybrid or dual-clutch transmission system. The computer monitors the current and voltage on these phases and sets the code when the expected electrical signature is missing, often due to a broken wire, poor connection, or failed clutch actuator.

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.