Pressure Control Solenoid Intermittent
The P2735 code indicates an intermittent fault in the pressure control solenoid circuit, which regulates transmission line pressure. This solenoid receives a variable voltage from the transmission control module (TCM) to adjust hydraulic pressure for smooth shifting. An intermittent signal suggests a loose connection, damaged wiring, or a failing solenoid that works sporadically, leading to unpredictable transmission behavior.
1. Most Common Causes
- Faulty pressure control solenoid
- Damaged wiring or connectors in the solenoid circuit
- Intermittent electrical short or open
- Low transmission fluid level or contamination
- Failing transmission control module (TCM)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Erratic or harsh shifting
- Transmission slipping or delayed engagement
- Reduced fuel economy
- Transmission stuck in limp mode
3. Step-by-Step Diagnosis
Step 1: Scan the vehicle for all stored codes and 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 the pressure control solenoid for damage, corrosion, or loose pins.
Step 4: Use a multimeter to test solenoid resistance and compare to manufacturer specs.
Step 5: Perform a solenoid actuation test with a scan tool to verify operation.
Step 6: If intermittent, wiggle test wiring while monitoring solenoid signal to isolate the fault.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as intermittent solenoid operation can cause sudden transmission failure or unsafe driving conditions. Limp mode may limit speed and damage the transmission.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts (solenoid $50-$150) and labor ($100-$250). If the TCM is faulty, costs can exceed $800.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.