OBD-II code · Powertrain (generic)
P0BCB Hybrid/EV Battery Pack Cooling Fan 1 Sense Circuit Intermittent/Erratic
The HV battery pack cooling fan 1 sense circuit reports a sense circuit intermittent/erratic fault. Fan speed feedback is unreliable.
Is it safe to drive with P0BCB?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyConnector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
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
- Hv Battery Cooling Fan 1 Sense, Wiring Harness, Bms
Related codes
- P0BC8Hybrid/EV Battery Pack Cooling Fan 1 Sense Range/Performance
- P0BC9Hybrid/EV Battery Pack Cooling Fan 1 Sense Circuit Low
- P0BCAHybrid/EV Battery Pack Cooling Fan 1 Sense Circuit High
- P0BCCGenerator Inverter Temperature Sensor A Circuit
- P0BCDGenerator Inverter Temperature Sensor A Circuit Range/Performance
- P0BCEGenerator Inverter Temperature Sensor A Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.