Code result
P2678
Coolant Degassing Valve Control Circuit / Open
Moderate severity
What it means
The controller cannot drive the coolant degassing valve. Air pockets in the cooling system can form and cause local overheating.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open coil in degassing valve
highOne of the most commonly reported causes for this code — check this first.
Broken control wire
mediumA plausible cause — test and verify before replacing parts.
Related help
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