P2679 Possible Causes
- Faulty coolant degas valve
- Coolant degas valve harness is open or shorted
- Poor electrical connection in coolant degas valve circuit
How to Fix Code P2679
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check Engine Light illuminated (or Service Engine Soon warning light)
P2679 Meaning
The Powertrain Control Module (PCM) monitors the coolant degas valve control circuit. The PCM sets the OBDII code when the coolant degas valve control circuit falls outside factory specifications.