Engine Coolant Bypass Valve A Control Circuit/Open

Where it lives

For P2681, the valve sits on the circuit this code reports. The description of P2681 reports the valve as open.

Check these first

• An open in the engine coolant bypass valve A control circuit
• A short to ground or voltage on the engine coolant bypass valve A control wire
• A failed engine coolant bypass valve A
• A corroded or backed out pin at the engine coolant bypass valve A connector

What to do next

1. Read engine coolant bypass valve A status on a scan tool
2. Command engine coolant bypass valve A on and off
3. Test the engine coolant bypass valve A control circuit for open and short faults
4. Check the engine coolant bypass valve A connector pins
5. Replace engine coolant bypass valve A if the circuit tests good
6. Clear the code and retest

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