P0923

Gear Shift Forward Actuator Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Inability to shift into certain gears
The gearbox goes into emergency mode
Check Engine light comes on
Jerks when shifting gears
Reduced vehicle dynamics

Causes

Open or short circuit in the actuator circuit
Shift actuator malfunction
Problems with the wiring harness or connectors
Transmission control module (TCM) malfunction
Poor circuit grounding

How to Fix

Check the integrity of the actuator circuit
Inspect connectors and wiring harness for damage
Check actuator resistance
Check circuit power and grounding
Replace actuator or TCM if necessary

Related codes

P0921 P0922 P0924