P2736: Pressure Control Solenoid 'F' Control Circuit/Open
The Powertrain Control Module (PCM) has detected an open or high resistance in the electrical circuit for the pressure control solenoid 'F'. This solenoid regulates hydraulic pressure to the transmission clutches and bands. An open circuit prevents proper solenoid operation, leading to transmission shifting issues and potential internal damage.
1. Most Common Causes
- Open or shorted wiring in the solenoid circuit
- Faulty pressure control solenoid 'F'
- Corroded or damaged connector at solenoid or PCM
- Failed PCM (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission stuck in limp mode or a single gear
- Decreased fuel economy
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect wiring and connectors for damage, corrosion, or loose pins.
Step 3: Measure resistance of solenoid 'F' (typically 4-6 ohms); compare to specs.
Step 4: Check for voltage and ground at solenoid connector with key on, engine off.
Step 5: If wiring and solenoid are good, test PCM output or replace PCM.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with an open solenoid circuit can cause harsh shifting, transmission slippage, and potential internal damage. Limp mode may limit speed and drivability.
How much does it cost to fix?▼
Repair costs range from $150 to $400, including diagnosis. Solenoid replacement is typically $100-$250 for parts and labor; wiring repairs are less. PCM replacement is more expensive.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.