P2733 - Pressure Control Solenoid 'G' Stuck On
The P2733 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 within the transmission for proper shifting. When stuck on, it can cause excessive pressure, leading to harsh shifts, slipping, or transmission damage.
1. Most Common Causes
- Faulty pressure control solenoid 'F' with shorted coil
- Solenoid valve mechanically stuck due to contaminated transmission fluid
- Transmission control module (TCM) output stuck high
- Solenoid wiring shorted to ground or battery voltage
- Damaged connector or harness with excessive resistance or short circuit
- Contaminated transmission fluid causing valve sticking from internal wear
- Internal transmission valve body failure
2. Symptoms You Will Notice
- Harsh or delayed shifts
- Transmission slipping
- Check Engine Light illuminated
- Transmission stuck in gear
3. Step-by-Step Diagnosis
Step 1: Scan for additional transmission 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 to solenoid 'G' for damage or corrosion.
Step 4: Test solenoid resistance and operation using a multimeter or scan tool bidirectional control.
Step 5: If solenoid is faulty, replace it; if wiring is bad, repair as needed.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a stuck solenoid can cause harsh shifting, transmission slipping, and potential internal damage, leading to costly repairs.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. Replacing the solenoid itself is $50-$150, plus diagnostic time and fluid service.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.