OBD-II code · Powertrain (generic)
P0B1A Hybrid/EV Battery Pack Voltage Sense C Circuit Range/Performance
The ECM detects a circuit range/performance fault on the hybrid/ev battery pack voltage sense c circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0B1A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor characteristic drifted
- PossibleSensor mounting displaced
- Less likelySensor element aged beyond calibration window
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
- P0ABBHybrid/EV Battery Pack Voltage Sense A Circuit Range/Performance
- P0B15Hybrid/EV Battery Pack Voltage Sense B Circuit Range/Performance
- P0B1FHybrid/EV Battery Pack Voltage Sense D Circuit Range/Performance
- P0B17Hybrid/EV Battery Pack Voltage Sense B Circuit High
- P0B18Hybrid/EV Battery Pack Voltage Sense B Circuit Intermittent/Erratic
- P0B19Hybrid/EV Battery Pack Voltage Sense C Circuit
- P0B1BHybrid/EV Battery Pack Voltage Sense C Circuit Low
- P0B1CHybrid/EV Battery Pack Voltage Sense C Circuit High
- P0B1DHybrid/EV Battery Pack Voltage Sense C Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.