Code Definition

P0771 — Shift Solenoid E Performance or Stuck Off

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

About P0771

P0771 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 P0771 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

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 P0771 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 P0771 is set when the transmission control module (TCM) or the engine control module (ECM) in vehicles with integrated control systems detects an issue with the performance of shift solenoid 'E', specifically when it is not functioning correctly or is stuck in the 'off' position. This solenoid is responsible for controlling hydraulic fluid flow critical for the engagement and disengagement of gears within the transmission. A solenoid that is performing poorly or is stuck off can lead to difficulties in shifting, failure to engage certain gears, or irregular transmission behaviou...

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