Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that there's a problem with the part of the car that helps get rid of air bubbles in the engine's coolant. It's like when a straw has a hole and can't suck up a drink properly.
The engine control module (ECM) has detected a low voltage or no signal from the coolant degassing valve control circuit.
The P2679 code indicates a malfunction in the coolant degassing valve control circuit, specifically that the voltage is lower than expected. This valve is responsible for removing air pockets from the engine's cooling system to ensure proper coolant flow and temperature regulation.
• Check Engine Light illuminated
• Engine overheating
• Poor engine performance
• Faulty coolant degassing valve
• Wiring issues such as shorts or opens in the circuit
• Faulty engine control module (ECM)
ECM: Engine Control Module
Coolant: A fluid used to keep the engine from overheating
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the coolant degassing valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty coolant degassing valve.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford Focus
• Chevrolet Cruze
• Volkswagen Jetta
• Regularly inspect and maintain the cooling system.
• Ensure proper coolant levels are maintained.
• Check for leaks or damage in the cooling system.
Sensor Issue
• Do not ignore the Check Engine Light.
• Avoid driving the vehicle if overheating occurs.
• Seek professional diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with vehicles that have complex cooling systems, where air pockets can cause significant issues if not properly managed.
High – This issue can lead to engine overheating and potential engine damage if not addressed promptly.
Driving with an overheating engine can cause severe damage and is not recommended. Always follow safety guidelines when working on your vehicle.
• Engine at operating temperature
• Coolant levels checked
The coolant degassing valve is typically located near the engine's cooling system, often attached to or near the radiator or coolant reservoir.
Q: Can I drive with a P2679 code?
A: It's not recommended to drive with this code as it can lead to engine overheating.
Q: How can I prevent P2679 from happening again?
A: Regular maintenance of the cooling system and checking for leaks can help prevent this issue.
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