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DTC codes / P27xx · Transmission / P27E6

P27E6Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High

P27E6 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the control circuit for the electric or auxiliary transmission fluid pump control valve. This valve is used in some transmissions to manage fluid flow for the auxiliary pump, which maintains pressure during engine stop-start events or low-speed operation. The high voltage suggests a short to power, an open circuit, or a faulty valve or PCM driver.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
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.

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