OBD-II code · Powertrain (generic)
P0B50 Hybrid/EV Battery Voltage Sense E Circuit Range/Performance
The BMS detects a circuit range/performance fault on voltage sense channel E of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
Is it safe to drive with P0B50?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySense voltage drifted
- PossibleHigh-resistance contact
- 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
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Voltage Sense E, Wiring Harness, Bms
Related codes
- P0B3CHybrid/EV Battery Voltage Sense A Circuit Range/Performance
- P0B41Hybrid/EV Battery Voltage Sense B Circuit Range/Performance
- P0B46Hybrid/EV Battery Voltage Sense C Circuit Range/Performance
- P0B4BHybrid/EV Battery Voltage Sense D Circuit Range/Performance
- P0B55Hybrid/EV Battery Voltage Sense F Circuit Range/Performance
- P0B5AHybrid/EV Battery Voltage Sense G Circuit Range/Performance
- P0B5FHybrid/EV Battery Voltage Sense H Circuit Range/Performance
- P0B64Hybrid/EV Battery Voltage Sense I Circuit Range/Performance
- P0B69Hybrid/EV Battery Voltage Sense J Circuit Range/Performance
- P0B6EHybrid/EV Battery Voltage Sense K Circuit Range/Performance
- P0B73Hybrid/EV Battery Voltage Sense L Circuit Range/Performance
- P0B78Hybrid/EV Battery Voltage Sense M Circuit Range/Performance
- P0B4DHybrid/EV Battery Voltage Sense D Circuit High
- P0B4EHybrid/EV Battery Voltage Sense D Circuit Intermittent/Erratic
- P0B4FHybrid/EV Battery Voltage Sense E Circuit
- P0B51Hybrid/EV Battery Voltage Sense E Circuit Low
- P0B52Hybrid/EV Battery Voltage Sense E Circuit High
- P0B53Hybrid/EV Battery Voltage Sense E Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.