Code Definition

P0775 — Shilt solenoid B circuit open

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0775

P0775 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0775 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0775 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The fault code P0775 is set when the transmission control module (TCM) or the engine control module (ECM) in vehicles with integrated control systems detects an open circuit condition in shift solenoid 'B'. An open circuit indicates a break or disconnection in the electrical pathway required for the solenoid's operation. Shift solenoid 'B' is crucial for controlling the hydraulic fluid flow that enables the activation of certain gears in the transmission. An open circuit can prevent the solenoid from receiving and responding to electrical signals, leading to issues such as difficulties in shif...

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