Powertrain
generic / SAE
P0B12
Hybrid/EV Battery Pack Current Sensor B Circuit Intermittent/Erratic
The ECM detects a circuit intermittent/erratic fault on the hybrid/ev battery pack current sensor b circuit. Reading cannot be used reliably for control.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberB / 12
Possible causes
- Sensor connector not seated high
- Noisy ground reference medium
- Connector with intermittent contact under vibration 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: 300–2000 €
- Estimated time: 2–7 h
- Component: hv battery pack current sensor b
- Component: wiring harness
- Component: bms
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012