Code Definition

P0918 — Gear Shift Position Circuit Intermittent

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

About P0918

P0918 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 P0918 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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 P0918 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 P0918 fault code is set when the control module detects intermittent signals in the gear shift position circuit. This circuit is essential for monitoring the position of the gear shift within the vehicle's transmission system. An intermittent fault implies that the signals from the gear shift position sensor to the control module are irregular, sporadic, or failing to maintain a consistent connection. This intermittent behaviour can be due to loose connections, corroded terminals, intermittent shorts, or issues within the sensor itself, leading to unpredictable transmission behaviour or in...

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