Code Definition

P0905 — Gate Select Position Circuit Range/Performance

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

About P0905

P0905 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 P0905 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 P0905 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 P0905 fault code is set when the transmission control module (TCM) detects a problem with the range or performance of the gate select position circuit, which is responsible for sensing the gear selector's lateral (left/right) positioning. This circuit plays a vital role in vehicles with manual or semi-automatic transmissions, as it provides crucial feedback to the TCM regarding the gear selector's position. The code indicates that the electrical signals from the gate select position sensor are falling outside the expected parameters or are not performing as intended. This can lead to incor...

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