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DTC codes / P27xx · Transmission / P27DF

P27DFPressure Control Solenoid T Control Circuit Low

P27DF indicates that the transmission control module (TCM) has detected an abnormally low voltage or current on the control circuit for pressure control solenoid T. This solenoid is responsible for regulating hydraulic pressure inside the transmission, and a low circuit condition means the TCM cannot reliably command the solenoid, potentially leading to harsh or erratic shifting.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
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.

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