P0020: Camshaft Position Actuator Circuit (Bank 2)
The P0020 code indicates a malfunction in the camshaft position actuator circuit for Bank 2 (the side of the engine opposite cylinder #1). This circuit controls the variable valve timing (VVT) solenoid, which adjusts camshaft timing to optimize engine performance and emissions. The Powertrain Control Module (PCM) detects an electrical fault—such as an open, short, or high resistance—in the solenoid's wiring or the solenoid itself. This can lead to improper camshaft timing, affecting engine power, fuel economy, and emissions.
01. Most Common Causes
- Faulty camshaft position actuator solenoid (VVT solenoid) on Bank 2
- Open or shorted wiring in the actuator circuit
- Corroded or loose electrical connector
- Engine oil sludge or low oil pressure affecting solenoid operation
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Rough idle or engine misfire
- Reduced engine power and acceleration
- Poor fuel economy
- Failed emissions test
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data. Clear code and test drive to see if it returns.
Step 2: Visually inspect the Bank 2 VVT solenoid connector and wiring for damage, corrosion, or loose connections.
Step 3: Test the solenoid resistance with a multimeter (typically 6-12 ohms). Compare to manufacturer specs.
Step 4: Check for battery voltage and ground at the solenoid connector with the ignition on. If missing, trace circuit for opens/shorts.
Step 5: If wiring and solenoid test OK, suspect a PCM issue; perform a PCM relay and power check.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances. The code can cause rough running, reduced power, and potential engine damage if timing is severely off. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. A VVT solenoid replacement is often $100-$200 for the part plus 1-2 hours of labor.