OBD
P0B4C
Hybrid/EV Battery Voltage Sense D Circuit Low
What it means
P0B4C means Hybrid/EV Battery Voltage Sense D Circuit Low.
Check these first
- A short to ground in the voltage sense D circuit
- Low battery pack voltage
- A failed battery pack voltage sense D sensor reading low
- Corroded sense D terminals
What to do next
- Read battery pack voltage sense D on a scan tool
- Check the sense D circuit for a short to ground
- Inspect the sense D terminals for corrosion
- Check the battery pack state of charge
- Replace the sense D sensor if the circuit tests good
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.