Engine Coolant Bypass Valve D Stuck Closed

Where it lives

For P26C2, the description names the valve as the part involved.

Check these first

• The engine coolant bypass valve D stuck closed
• Carbon or debris holding the engine coolant bypass valve D closed
• A failed engine coolant bypass valve D actuator
• A binding linkage on the engine coolant bypass valve D

What to do next

1. Read engine coolant bypass valve D status on a scan tool
2. Command engine coolant bypass valve D open and closed
3. Inspect the engine coolant bypass valve D for carbon or debris
4. Check the engine coolant bypass valve D linkage for binding
5. Replace engine coolant bypass valve D if it does not move
6. Clear the code and retest

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