Engine Oil Bypass Valve Control Circuit Low

Common symptoms

What you'll notice

• Check engine oil level and ensure it is at the appropriate level
• Inspect the engine oil bypass valve for any damage or clogs and clean or replace if necessary
• Verify the wiring and connections related to the engine oil bypass valve control circuit for any faults or loose connections, and repair if needed
• Inspect the engine oil pressure sensor and its wiring for any issues, and replace or repair as required
• If all else fails, consider replacing the engine oil pump to resolve the issue

Common causes

Most likely first

1. Malfunctioning engine oil bypass valve
2. Low oil pressure
3. Faulty engine oil pressure switch
4. Wiring issues or loose connections in the engine oil bypass valve control circuit

How to diagnose & fix

Work through it in order

1. Check engine light is illuminated on the dashboard
2. Engine may run rough or have a noticeable decrease in performance
3. Decreased fuel efficiency
4. Engine may experience stalling or intermittent power loss
5. Potential for engine overheating or increased operating temperatures