Powertrain
generic / SAE
P2E73
Hybrid/EV Battery Pack B Cell Thickness Sensor Circuit Performance
The cell thickness sensor of HV battery pack B signal does not match plausibility checks. Cell-group voltage monitoring is the foundation of HV battery safety — drift here triggers contactor opening, charge inhibit, and reduced power to protect the pack.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberE / 73
Possible causes
- Sensor offset drifted high
- Sensor mounting displaced medium
- Pack cell imbalance approaching service threshold 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: 800–8000 €
- Estimated time: 4–20 h
- Component: hybrid battery pack b
- Component: hybrid battery pack b thickness sensor
- Component: bms
- MIL / check engine light
- drive cycle required
- limp mode possible
Sources
References
sae:J2012