What are the common causes of P0B3C?

A sensor A that reads off from actual pack voltage. Corrosion in the voltage sense A connector. High resistance in the voltage sense A circuit. A control module misreading the sense A signal.

Compare sense A to actual pack voltage on a scan tool. Measure the sense A voltage against pack voltage. Check the sense A circuit for high resistance. Inspect the sense A connector for corrosion. Replace the sense A sensor if it reads off spec. Clear the code and retest.

P0B3C

Hybrid/EV Battery Voltage Sense A Circuit Range/Performance

System: Powertrain control (P code)
Lamp: Check Engine Light
Category: Powertrain - Hybrid Propulsion

What it means

P0B3C means Hybrid/EV Battery Voltage Sense A Circuit Range/Performance.

Check these first

A sensor A that reads off from actual pack voltage
Corrosion in the voltage sense A connector
High resistance in the voltage sense A circuit
A control module misreading the sense A signal

What to do next

Compare sense A to actual pack voltage on a scan tool
Measure the sense A voltage against pack voltage
Check the sense A circuit for high resistance
Inspect the sense A connector for corrosion
Replace the sense A sensor if it reads off spec
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.