P0924 Gear Shift Reverse Actuator Circuit/Open

P0924 indicates a gear shift reverse actuator circuit or open-circuit fault. The electrical path used to command reverse actuator movement is incomplete.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Transmission
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not diagnose reverse gear hardware before verifying the reverse actuator circuit and safety interlocks.

Useful checks before replacing parts

Check reverse actuator feed, ground, driver command, resistance, current draw, connector condition, and circuit continuity under load.
Inspect reverse actuator wiring, transmission connector pins, harness routing, module connector condition, and fluid or water intrusion.
Compare reverse command with gear position feedback and reverse inhibit logic to identify whether the actuator circuit is truly open.

Related OBD-II codes

These nearby transmission entries can help compare wording and fault area. They may share the same verification status as the source database.