Error code

OBD2 P0020

OBD2P0020
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

'A' Camshaft Position Actuator Circuit.

Severity

moderateCan be driven, but performance issues may occur.

Summary

Code P0020 indicates a malfunction in the camshaft position actuator circuit for bank 2 of the engine's inlet camshaft.

Symptoms

  • Illuminated check engine light
  • Rough running at high speeds
  • Loss of power at mid and high RPMs
  • Increased fuel consumption
  • Occasional stalling, especially under hard acceleration
  • 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 replace if out of specification.
  4. Apply direct power to the solenoid from the battery and check functionality.
  5. Use a scan tool to monitor the status of the valve through different engine speeds.

Fixes

  • Replace defective oil flow control valve solenoid or ECM if necessary.

FAQ

What does P0020 mean?

P0020 indicates a malfunction in the camshaft position actuator circuit for bank 2 of the engine's inlet camshaft.

How do I diagnose P0020?

Diagnose by inspecting wiring and connectors, testing solenoid resistance, applying direct power to the solenoid, and using a scan tool to monitor valve status.

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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