OBD-II code · Powertrain (generic)
P0DFF Battery Charger Coolant Control Valve Control Circuit High
Voltage on the battery charger coolant control valve control line is above the expected window. The on-board charger negotiates voltage, current and safety with the EVSE; a fault interrupts charging or limits it to AC slow-charge despite a DC fast charger being attached.
Is it safe to drive with P0DFF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWire shorted to B+
- PossibleCoil open
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Battery Charger Coolant Valve, Wiring Harness
Related codes
- P0DFCGenerator Position Sensor Not Learned
- P0DFDBattery Charger Coolant Control Valve Control Circuit/Open
- P0DFEBattery Charger Coolant Control Valve Control Circuit Low
- P0E00Generator Phase U Current Sensor Circuit
- P0E01Generator Phase U Current Sensor Circuit Range/Performance
- P0E02Generator Phase U Current Sensor Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.