DTC codes / P07xx · Transmission / P0758
P0758 is a generic OBD-II code indicating an electrical fault in the circuit for shift solenoid 'B', which is one of the solenoids the transmission control module (TCM) uses to control gear shifts. The TCM monitors the solenoid's electrical circuit and sets this code when the current or voltage is outside the expected range, often due to an open, short, or high resistance in the wiring or solenoid itself.
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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