OBD
P0B2D
Hybrid/EV Battery C Voltage Low
What it means
P0B2D means Hybrid/EV Battery C Voltage Low.
Check these first
- An aged battery C that is not holding charge
- A failed battery C cell
- Corroded battery C terminals
- A charging system not charging battery C
What to do next
- Read hybrid battery C voltage on a scan tool
- Check the battery C state of charge
- Test the battery C cells for a failed cell
- Inspect the battery C terminals for corrosion
- Replace battery C if the cells test good but voltage stays low
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.