Powertrain
generic / SAE
P2CF8
Engine Coolant Bypass Valve D Control Circuit Driver Current/Temperature Too High
The output driver for the engine coolant bypass valve D actuator reports current or junction temperature above its protection threshold. Stalled actuator or short to ground.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberC / F8
Possible causes
- Bypass actuator mechanically jammed high
- Control wire shorted to ground medium
Symptoms
- Check engine light on
- Cooling fan runs constantly or not at all
- Cabin heater weak or excessively hot
- Possible long warm-up time or hard cold start
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–1800 €
- Estimated time: 2–6 h
- Component: engine coolant bypass valve d
- Component: ecm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012