Pressure Control Solenoid 'G' Control Circuit Low
The P2814 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the control circuit of the pressure control solenoid 'G'. This solenoid is typically part of the transmission valve body and regulates hydraulic pressure for clutch or band application. A low circuit condition can be caused by a short to ground, open circuit, faulty solenoid, or a PCM issue. This can lead to harsh shifting, slipping, or transmission overheating.
1. Most Common Causes
- Faulty pressure control solenoid 'G'
- Open or shorted wiring in the solenoid control circuit
- Poor electrical connection at the solenoid or PCM
- Internal transmission fluid contamination
- Failed PCM (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifts
- Transmission slipping or overheating
- Reduced fuel economy
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Inspect wiring and connectors for damage, corrosion, or loose pins.
Step 3: Test solenoid resistance and compare to manufacturer specs (typically 4-6 ohms).
Step 4: Check for short to ground or power in the control circuit using a multimeter.
Step 5: If wiring and solenoid are okay, test PCM output or replace PCM as last resort.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as transmission damage can occur. Limited driving to a repair shop is acceptable if shifting is not severely affected.
How much does it cost to fix?▼
Repair costs range from $150 to $400, including parts and labor. Solenoid replacement is typically $100-$200, plus diagnostic fees.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.