Powertrain
generic / SAE
P0DEC
Hybrid/EV Battery Pack Coolant Control Valve C Control Circuit High
The HV battery pack coolant control valve C reports a control circuit high condition. 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
GroupP0
Range / numberD / EC
Possible causes
- Wire shorted to B+ high
- Coil open medium
- Connector pins corroded - high contact resistance low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
Pro mode: costs, time and components
Free with the newsletter by Fabian Brose: enter your name and email, confirm by mail – Pro mode is then unlocked on this device for 30 days. The newsletter arrives about every two weeks, unsubscribe at any time. Already subscribed? One click is enough – you will be recognised.
Unlock Pro mode for freeSources
References
sae:J2012