OBD-II code · Powertrain (generic)
P0BB2 Hybrid/EV Battery Voltage Sense X Circuit Intermittent/Erratic
The BMS detects a circuit intermittent/erratic fault on voltage sense channel X of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
Is it safe to drive with P0BB2?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySense connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
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 X, Wiring Harness, Bms
Related codes
- P0B80Hybrid/EV Battery Voltage Sense N Circuit Intermittent/Erratic
- P0B85Hybrid/EV Battery Voltage Sense O Circuit Intermittent/Erratic
- P0B8AHybrid/EV Battery Voltage Sense P Circuit Intermittent/Erratic
- P0B8FHybrid/EV Battery Voltage Sense Q Circuit Intermittent/Erratic
- P0B94Hybrid/EV Battery Voltage Sense R Circuit Intermittent/Erratic
- P0B99Hybrid/EV Battery Voltage Sense S Circuit Intermittent/Erratic
- P0B9EHybrid/EV Battery Voltage Sense T Circuit Intermittent/Erratic
- P0BA3Hybrid/EV Battery Voltage Sense U Circuit Intermittent/Erratic
- P0BA8Hybrid/EV Battery Voltage Sense V Circuit Intermittent/Erratic
- P0BADHybrid/EV Battery Voltage Sense W Circuit Intermittent/Erratic
- P0BB7Hybrid/EV Battery Voltage Sense Y Circuit Intermittent/Erratic
- P0BBCHybrid/EV Battery Voltage Sense Z Circuit Intermittent/Erratic
- P0BAFHybrid/EV Battery Voltage Sense X Circuit Range/Performance
- P0BB0Hybrid/EV Battery Voltage Sense X Circuit Low
- P0BB1Hybrid/EV Battery Voltage Sense X 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
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.