Lost Communication With Engine Coolant Bypass Valve C

Where it lives

For U0617, start at the valve the description names.

Check these first

• The bus cannot reach the coolant bypass valve C actuator
• A burned actuator motor or solenoid in valve C
• A binding linkage holding the bypass valve C actuator
• A broken return spring in actuator C
• A missing command signal to the coolant bypass valve C

What to do next

1. Command coolant bypass valve C with a scan tool and watch for movement
2. Inspect the actuator linkage for binding or debris
3. Check the actuator connector and wiring
4. Test the actuator motor or solenoid resistance
5. Replace the coolant bypass valve C actuator if it does not respond
6. Clear the code and retest

Look up another code