OBD-II code · Powertrain (generic)
P0B1B Hybrid/EV Battery Pack Voltage Sense C Circuit Low
The ECM detects a circuit low fault on the hybrid/ev battery pack voltage sense c circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0B1B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- 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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–7 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Pack Voltage Sense C, Wiring Harness, Bms
Related codes
- P0ABCHybrid/EV Battery Pack Voltage Sense A Circuit Low
- P0B16Hybrid/EV Battery Pack Voltage Sense B Circuit Low
- P0B20Hybrid/EV Battery Pack Voltage Sense D Circuit Low
- P0B18Hybrid/EV Battery Pack Voltage Sense B Circuit Intermittent/Erratic
- P0B19Hybrid/EV Battery Pack Voltage Sense C Circuit
- P0B1AHybrid/EV Battery Pack Voltage Sense C Circuit Range/Performance
- P0B1CHybrid/EV Battery Pack Voltage Sense C Circuit High
- P0B1DHybrid/EV Battery Pack Voltage Sense C Circuit Intermittent/Erratic
- P0B1EHybrid/EV Battery Pack Voltage Sense D Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.