OBD-II code · Powertrain (generic)
P0A85 Hybrid/EV Battery Pack Cooling Fan 1 Control Circuit High
Voltage on the HV battery pack cooling fan 1 control circuit is above the expected window. Wire shorted to B+ or driver open.
Is it safe to drive with P0A85?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to B+
- PossibleOpen fan motor
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Hybrid Battery Cooling Fan 1, Wiring Harness, Bms
Related codes
- P0A82Hybrid Battery Pack Cooling Fan 1 Circuit Low
- P0A83Hybrid Battery Pack Cooling Fan 1 Circuit High
- P0A84Hybrid Battery Pack Cooling Fan 2 Performance
- P0A8614 Volt Power Module Current Sensor A Circuit
- P0A8714 Volt Power Module Current Sensor A Circuit Range/Performance
- P0A8814 Volt Power Module Current Sensor A Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.