Gear Shift Forward Actuator Circuit Low
The P0922 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the gear shift forward actuator circuit. This actuator is responsible for engaging the forward gears in automatic transmissions. A low voltage reading suggests a short to ground, open circuit, or faulty actuator, which can prevent proper gear engagement and lead to transmission performance issues.
01. Most Common Causes
- Faulty gear shift forward actuator
- Short to ground in actuator circuit wiring
- Open circuit in actuator wiring or connector
- Failed PCM (rare)
02. Symptoms You Will Notice
- Transmission fails to shift into forward gears
- Check Engine Light illuminated
- Transmission stuck in neutral or limp mode
- Harsh or delayed shifting
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P0922 and check for related codes.
Step 2: Visually inspect the actuator wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test the actuator circuit voltage with a multimeter; compare to manufacturer specifications.
Step 4: Check resistance of the actuator solenoid; replace if out of spec.
Step 5: If wiring and actuator are good, test PCM output; replace PCM if faulty.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The transmission may fail to engage forward gears, causing loss of driveability and potential accidents. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and minor repairs like wiring fixes. Actuator replacement can cost $200-$400, and PCM replacement may exceed $500.