P2816 - Pressure Control Solenoid 'G' Stuck On
The P2816 code indicates that the Transmission Control Module (TCM) has detected the pressure control solenoid 'G' is stuck in the 'on' position. This solenoid regulates hydraulic pressure to the transmission clutches and bands. When stuck on, it can cause harsh shifts, slipping, or transmission overheating. The issue is often due to electrical faults, contaminated transmission fluid, or mechanical failure within the solenoid.
01. Most Common Causes
- Faulty pressure control solenoid 'G'
- Dirty or contaminated transmission fluid
- Wiring or connector issues in the solenoid circuit
- Internal transmission mechanical failure
02. Symptoms You Will Notice
- Harsh or delayed shifts
- Transmission slipping
- Check Engine Light illuminated
- Transmission overheating
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; replace if dirty.
Step 3: Test solenoid resistance and power/ground circuits with a multimeter.
Step 4: Perform a transmission pressure test to verify solenoid operation.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause further transmission damage. Limited driving to a repair shop is acceptable if shifts are not severely affected.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. Solenoid replacement is often $50-$150, plus diagnostic fees.