P2680 Fault Code

Coolant Degassing Valve Control Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2680 fault code indicates an issue with the coolant degassing valve control circuit. This valve plays a crucial role in maintaining optimal coolant pressure and preventing overheating. When the control circuit is reported as high, it suggests that the valve could be stuck open or there might be an electrical issue affecting its operation.

What are the symptoms of the P2680 code?

• Engine overheating due to coolant not being properly circulated.
• Inconsistent coolant levels in the reservoir.
• Warning lights or messages on the dashboard indicating coolant system issues.
• Unusual noises from the engine bay related to coolant flow.

What causes the P2680 code?

• Electrical short in the coolant degassing valve circuit.
• Faulty coolant degassing valve.
• Damaged wiring or connectors leading to poor electrical contact.
• Malfunctioning Engine Control Unit (ECU) sending incorrect signals.

How to fix P2680?

• Inspect the wiring and connectors for damage and ensure proper electrical connections.
• Test the coolant degassing valve for functionality and replace it if it is faulty.
• Use a scanner to clear the error codes after any repairs and monitor the system to ensure proper operation.
• If an ECU issue is suspected, consider reprogramming or replacing the unit as a last resort.