Error code

OBD2 P0028

OBD2P0028
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Intake Valve Control Solenoid Circuit Range/Performance.

Severity

moderateCan drive, but performance issues may occur.

Summary

P0028 indicates an issue with the intake valve control solenoid circuit on bank 2 of the engine, which affects variable valve timing.

Symptoms

  • Illuminated check engine light
  • Rough idle
  • Reduced engine power at certain speeds
  • Increased fuel consumption

Common Causes

  • Low engine oil level or pressure
  • Incorrect or unsuitable lubricating oil
  • Open or short circuits in associated wiring
  • Corroded electrical connectors
  • Loss of ground contact
  • Defective actuators or control valves/mechanisms

Diagnosis

  1. Check and adjust engine oil level to correct mark.
  2. Perform an oil pressure test to ensure it is within specification.
  3. Inspect all related wiring and connectors for defects.
  4. If no electrical faults are found, inspect actuators and control valves/mechanisms for damage or sludge.
  5. Consider performing an engine flush if internal passages may be blocked.

Fixes

  • Replace faulty solenoid or related components as needed.

FAQ

What does P0028 mean?

P0028 indicates a problem with the intake valve control solenoid circuit on bank 2 of the engine.

How do I fix P0028?

Fixing P0028 involves checking and adjusting oil levels, testing electrical components, and possibly replacing faulty parts like actuators or valves.

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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