P0922 Gear Shift Forward Actuator Circuit Low

P0922 indicates the gear shift forward actuator circuit is low. The control circuit is grounded, missing voltage, or below the expected electrical range.

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 mechanical shift failure until the low forward actuator circuit is repaired.

Useful checks before replacing parts

Measure forward actuator command voltage, feed, ground, resistance, and current while checking for short-to-ground faults.
Inspect connector terminals, relay or fuse supply, module driver output, harness rub points, and actuator winding condition.
Compare the low circuit event with gear selection failure, position feedback, system voltage, and freeze-frame temperature.

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.