Powertrain
generic / SAE
P0B73
Hybrid/EV Battery Voltage Sense L Circuit Range/Performance
The BMS detects a circuit range/performance fault on voltage sense channel L of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberB / 73
Possible causes
- Sense voltage drifted high
- High-resistance contact medium
- Sensor element aged beyond calibration window low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–2500 €
- Estimated time: 2–8 h
- Component: hv battery voltage sense l
- Component: wiring harness
- Component: bms
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012