P0023: Camshaft Position Actuator Circuit (Bank 2)
The P0023 code indicates a malfunction in the electrical circuit of the camshaft position actuator solenoid for Bank 2 (the side of the engine opposite cylinder #1). This solenoid controls oil flow to the variable valve timing (VVT) mechanism, adjusting camshaft timing for performance and emissions. A circuit fault—such as an open, short, or high resistance—prevents proper actuator operation, potentially causing poor engine performance, increased emissions, and illumination of the Check Engine Light.
01. Most Common Causes
- Faulty camshaft position actuator solenoid (Bank 2)
- Open or shorted wiring in the actuator circuit
- Poor electrical connection at the solenoid connector
- Engine oil sludge or debris blocking the actuator
- Failed engine control module (ECM) (rare)
02. Symptoms You Will Notice
- Check Engine Light on
- Rough idle or engine misfire
- Reduced engine power and acceleration hesitation
- Poor fuel economy
- Failed emissions test
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm P0023 and check for additional codes.
Step 2: Visually inspect the Bank 2 camshaft actuator solenoid connector and wiring for damage, corrosion, or loose connections.
Step 3: Test the solenoid resistance with a multimeter (typically 6-12 ohms); replace if out of spec.
Step 4: Check for battery voltage and ground at the solenoid connector with the engine running; repair wiring if missing.
Step 5: If wiring and solenoid are okay, test the ECM output signal; if absent, suspect ECM failure.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with P0023 can cause reduced engine performance, increased emissions, and potential damage to the VVT system or catalytic converter over time.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on whether the solenoid or wiring needs replacement. Diagnostic fees may add $50-$100.