Error code

OBD2 P0022

OBD2P0022
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

'A' Camshaft Position - Timing Over-Retarded.

Severity

moderateCan drive, but performance may be affected. Addressing the issue is recommended.

Summary

P0022 indicates that the camshaft position sensor on bank 2 (intake/left/front) is detecting timing that is too retarded.

Symptoms

  • Loss of gas mileage
  • Engine stalling
  • Check engine light

Common Causes

  • Poor oil maintenance leading to carbon buildup and filter blockage in the VCT/VVT solenoid.
  • Faulty camshaft position sensor or wiring issues between the sensor and PCM/ECM.

Diagnosis

  1. Use a multimeter to check resistance in the camshaft position sensor terminals (7-12 ohms).
  2. Inspect and clean all harness connections from the valve solenoid to PCM/ECM.
  3. Perform wiggle tests on wiring harnesses while monitoring readings with a multimeter.

Fixes

  • Replace the faulty camshaft position sensor or VCT/VVT solenoid.

FAQ

What causes P0022?

Common causes include poor oil maintenance leading to carbon buildup and filter blockage in the VCT/VVT system, as well as faulty wiring or sensor issues.

How do I prevent future occurrences of P0022?

Regularly change high-quality engine oil and maintain proper lubrication. Ensure all electrical connections are clean and tight.

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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