OBD-II code · Powertrain (generic)
P0BB6 Hybrid/EV Battery Voltage Sense Y Circuit High
The BMS detects a circuit high fault on voltage sense channel Y of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
Is it safe to drive with P0BB6?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySense wire shorted to higher voltage
- PossibleReference regulator overvoltage
- 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
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Voltage Sense Y, Wiring Harness, Bms
Related codes
- P0B7FHybrid/EV Battery Voltage Sense N Circuit High
- P0B84Hybrid/EV Battery Voltage Sense O Circuit High
- P0B89Hybrid/EV Battery Voltage Sense P Circuit High
- P0B8EHybrid/EV Battery Voltage Sense Q Circuit High
- P0B93Hybrid/EV Battery Voltage Sense R Circuit High
- P0B98Hybrid/EV Battery Voltage Sense S Circuit High
- P0B9DHybrid/EV Battery Voltage Sense T Circuit High
- P0BA2Hybrid/EV Battery Voltage Sense U Circuit High
- P0BA7Hybrid/EV Battery Voltage Sense V Circuit High
- P0BACHybrid/EV Battery Voltage Sense W Circuit High
- P0BB1Hybrid/EV Battery Voltage Sense X Circuit High
- P0BBBHybrid/EV Battery Voltage Sense Z Circuit High
- P0BB3Hybrid/EV Battery Voltage Sense Y Circuit
- P0BB4Hybrid/EV Battery Voltage Sense Y Circuit Range/Performance
- P0BB5Hybrid/EV Battery Voltage Sense Y Circuit Low
- P0BB7Hybrid/EV Battery Voltage Sense Y Circuit Intermittent/Erratic
- P0BB8Hybrid/EV Battery Voltage Sense Z Circuit
- P0BB9Hybrid/EV Battery Voltage Sense Z Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.