Pressure Control Solenoid 'G' Control Circuit Low
The P2814 code indicates that the transmission control module (TCM) has detected a low voltage condition in the control circuit of pressure control solenoid 'G'. This solenoid regulates hydraulic pressure within the transmission for proper shifting. A low circuit condition typically points to a wiring issue, poor connection, or a faulty solenoid, which can lead to erratic shifting, slipping, or transmission damage if not addressed.
01. Most Common Causes
- Faulty pressure control solenoid 'G'
- Open or shorted wiring in the solenoid control circuit
- Poor electrical connection at the solenoid or TCM
- Low transmission fluid level or dirty fluid
- Internal transmission mechanical failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifting
- Transmission slipping or overheating
- Reduced fuel economy
- Transmission stuck in limp mode
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Visually check wiring and connectors for damage, corrosion, or loose pins.
Step 4: Test solenoid resistance with a multimeter and compare to manufacturer specs.
Step 5: Perform a circuit voltage test at the TCM connector to verify signal integrity.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a low circuit condition can cause erratic shifting, transmission slipping, and potential internal damage. Have the vehicle diagnosed and repaired promptly.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on whether the solenoid needs replacement, wiring repair, or a TCM update. Labor and parts vary by vehicle.