Code result
P0BBE
Hybrid/EV Battery Pack Voltage Variation
High severity
What it means
The BMS detects excessive variation between cell-group voltages within the HV battery pack. Cell imbalance beyond compensation.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Cell capacity imbalance
highOne of the most commonly reported causes for this code — check this first.
Cell balancing function failed
mediumA plausible cause — test and verify before replacing parts.
Ground point with elevated resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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