Code Definition

P0920 — Gear Shift Forward Actuator Circuit / Open [forward motion, odd gears, 1,3,5]

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

About P0920

P0920 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 P0920 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 P0920 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 P0920 fault code is set when the control module detects an open circuit condition in the gear shift forward actuator circuit. This specific circuit is associated with the actuation of the gear shift mechanism for forward motion, particularly concerning odd gears (1, 3, 5). An open circuit condition indicates a lack of electrical continuity, which prevents the normal operation of the gear shift forward actuator. This issue can result from a break in the wiring, disconnected connectors, or faults within the actuator itself, leading to difficulties or failures in engaging or maintaining the v...

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