OBD-II code P0023 indicates that the engine control module has detected an open circuit in the Bank 2 camshaft position actuator control circuit. This means the electrical path to the 'B' (usually exhaust) camshaft actuator solenoid is broken, preventing the variable valve timing system from operating correctly on that side of the engine.
The internal electromagnetic coil inside the oil control valve can burn out or break, creating an open circuit that triggers the code.
The control circuit wiring to the actuator may be broken, chafed, or disconnected, breaking the electrical path.
Corroded, pushed-out, or loose terminals in the actuator connector can cause an open circuit condition.
An internal open in the PCM driver circuit is possible but extremely rare and should only be considered after all other possibilities are eliminated.
Bank 2 refers to the side of the engine that does not contain cylinder number 1. On a V6 or V8, it is the left or right side depending on the engine orientation.
You can usually drive the vehicle to a repair location, but it may run poorly, hesitate, or stall. Avoid high RPMs or heavy acceleration until it is fixed.
No, it almost never does. Mechanics frequently see people replace the PCM for this code, but an 'open circuit' code specifically points to a broken wire, bad connection, or failed solenoid. The PCM is the very last component to suspect.
Dirty or low oil can cause VVT performance codes, but P0023 is an 'open circuit' code, meaning there is a physical break in the electrical path. However, it is still good practice to ensure the oil is clean and at the proper level.