P0023: Exhaust Camshaft Position Actuator Circuit / Open (Bank 2)
MediumPowertrainValve Timing
What does P0023 mean?
P0023 is a diagnostic trouble code indicating "Exhaust Camshaft Position Actuator Circuit / Open (Bank 2)". This means there is an electrical break in the valve timing wiring — a connector may be unplugged, a wire broken, or a component has failed internally. The ECU detected no signal where it expected one.
Common causes
- Damaged or corroded wiring harness
- Loose or disconnected electrical connector
- Failed valve timing sensor or actuator
- Blown fuse in the related circuit
- Poor ground connection
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
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