OBD-II code · Powertrain (generic)
P0B7C Hybrid/EV Battery Voltage Sense N Circuit
The BMS detects a circuit fault on voltage sense channel N of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
Is it safe to drive with P0B7C?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySense circuit failed
- PossibleWiring fault
- Less likelyPack cell imbalance approaching service threshold
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
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Voltage Sense N, Wiring Harness, Bms
Related codes
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- P0B81Hybrid/EV Battery Voltage Sense O Circuit
- P0B86Hybrid/EV Battery Voltage Sense P Circuit
- P0B8BHybrid/EV Battery Voltage Sense Q Circuit
- P0B90Hybrid/EV Battery Voltage Sense R Circuit
- P0B95Hybrid/EV Battery Voltage Sense S Circuit
- P0B9AHybrid/EV Battery Voltage Sense T Circuit
- P0B79Hybrid/EV Battery Voltage Sense M Circuit Low
- P0B7AHybrid/EV Battery Voltage Sense M Circuit High
- P0B7BHybrid/EV Battery Voltage Sense M Circuit Intermittent/Erratic
- P0B7DHybrid/EV Battery Voltage Sense N Circuit Range/Performance
- P0B7EHybrid/EV Battery Voltage Sense N Circuit Low
- P0B7FHybrid/EV Battery Voltage Sense N Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.