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DTC codes / P28xx · Transmission / P28C7
P28C7 indicates that the transmission control module has detected a performance fault in the clutch actuator circuit for phase U-V-W of clutch A, which is part of a dual-clutch or automated manual transmission. The computer monitors the electrical current and response time of the actuator and sets this code when the measured performance does not match the expected values for the commanded position.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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