Error code

OBD2 P0023

OBD2P0023
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

'B' Camshaft Position - Actuator Circuit.

Severity

moderateCan be driven, but performance issues may occur.

Summary

Code P0023 indicates a malfunction in the electrical circuit controlling the variable valve timing actuator for the exhaust camshaft on bank 2 of the engine.

Symptoms

  • Illuminated check engine warning light
  • Rough running at high engine speeds
  • Loss of power at mid and high RPMs
  • Increased fuel consumption
  • Occasional stalling, especially under hard acceleration
  • Occasional hard starting

Common Causes

  • Damaged or malfunctioning ECM (Engine Control Module)
  • Defective oil flow control valve solenoid
  • Breaks in wiring causing loss of continuity

Diagnosis

  1. Inspect and clean the electrical connector on the oil flow control valve.
  2. Check for continuity in the wiring at the oil flow control valve.
  3. Test solenoid resistance and compare with specified value.
  4. Apply direct power to the solenoid from the battery.
  5. Use a scan tool to check the functioning of the oil flow control valve.

Fixes

  • Replace defective ECM, oil flow control valve solenoid, or wiring harness as needed.

FAQ

What does P0023 mean?

P0023 indicates a malfunction in the electrical circuit controlling the variable valve timing actuator for the exhaust camshaft on bank 2.

How do I diagnose P0023?

Diagnose by inspecting wiring, connectors, and solenoid resistance. Use a scan tool to check valve control functionality.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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