P0020 indicates an open circuit in the camshaft position actuator control circuit for Bank 2. This typically means the engine control module has detected a break or high resistance in the wiring or connector to the variable valve timing (VVT) solenoid on that bank.
The most common cause is a failed oil control valve (VVT solenoid) on Bank 2. Internal shorts or open windings can break the circuit.
Corrosion, broken wires, or loose pins in the harness or connector to the VVT solenoid can create an open circuit.
Insufficient oil level or dirty oil can cause the VVT solenoid to stick or fail, leading to circuit issues.
Though rare, a failed PCM driver circuit for the VVT solenoid can cause this code. This should only be considered after all other possibilities are ruled out.
It is not recommended. The code indicates a circuit problem that can affect engine timing, leading to poor performance, reduced fuel economy, and potential engine damage if driven for extended periods.
No, while a faulty solenoid is the most common cause, wiring issues, connector problems, or low oil can also trigger the code. Always diagnose before replacing parts.
Almost never. PCM failure is extremely rare for this code. Most cases are resolved by repairing wiring or replacing the VVT solenoid. Only consider PCM replacement after thorough diagnosis of all other components.
Bank 2 refers to the side of the engine that does not contain cylinder #1. On V6 or V8 engines, it is typically the rear bank (closest to the firewall) on transverse-mounted engines, or the passenger side on longitudinal engines.