Powertrain
generic / SAE
P2682
Engine Coolant Bypass Valve A Control Circuit Low
Voltage on the coolant bypass valve A control line is below the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 82
Possible causes
- Control wire shorted to ground high
- Internal short in solenoid coil medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.8–3 h
- Component: coolant bypass valve a
- Component: solenoid
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012