Gear Shift Lock Solenoid/Actuator Control Circuit Low
The P092C code indicates that the powertrain control module (PCM) has detected a low voltage condition in the control circuit of the gear shift lock solenoid/actuator. This solenoid prevents the shifter from moving out of Park unless the brake pedal is pressed. A low circuit voltage can be caused by a faulty solenoid, wiring issues, or a problem with the brake switch signal. This condition may prevent the shifter from releasing, making it impossible to shift out of Park.
1. Symptoms You Will Notice
- Unable to shift out of Park (shift lock engaged)
- Brake pedal feels normal but shifter won't release
- Check Engine Light illuminated
- Brake lights may not work (if brake switch is faulty)
2. Most Common Causes
- Short to ground in the control circuit 'B' wiring
- Loose, corroded, or poor continuity electrical connections at the shift lock solenoid/actuator
- Faulty shift lock solenoid/actuator (internal short circuit)
- Damaged or internally failed powertrain control module (PCM/TCM)
3. Step-by-Step Diagnosis
Step 1: Verify the brake lights operate when pressing the brake pedal. If not, inspect the brake light switch and fuse.
Step 2: Locate the shift lock solenoid (usually on the shifter assembly) and check for 12V power and ground at the connector with the brake pressed.
Step 3: If power/ground missing, test continuity in the wiring between the solenoid and PCM/BCM. Repair any opens or shorts.
Step 4: If power and ground are present, test the solenoid resistance (typically 20-40 ohms). Replace if out of spec.
Step 5: Clear the code and test drive to confirm repair.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, because the shift lock may prevent you from shifting out of Park, leaving you stranded. Additionally, if the brake switch is faulty, brake lights may not work, creating a safety hazard.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor. A solenoid replacement costs around $20-$50, plus diagnostic time. Wiring repairs may add cost.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.