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DTC codes / P28xx · Transmission / P28CD
P28CD indicates that the powertrain control module (PCM) has detected an open circuit or abnormal voltage in the clutch A pressure sensor circuit, which monitors hydraulic pressure in the clutch system. The PCM expects a specific voltage range from the sensor and sets this code when the signal is missing or out of range.
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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