Gear Shift Reverse Actuator Circuit Low
The transmission's reverse gear actuator isn't receiving enough electrical power to function properly. Think of it like a dimmer switch not delivering enough power to turn on a light.
The ECM monitors the voltage and current supplied to the reverse actuator solenoid circuit. It expects a specific voltage range when the reverse command is issued. If the measured voltage drops below the minimum threshold, the ECU detects a low circuit condition and triggers the fault code.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Actuator Circuit Voltage | 11-14 volts | Below 6 volts or open circuit |
| Actuator Current Draw | 0.5-2.0 amps | Below 0.2 amps or excessive draw |
Code P0926 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0926 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.