What are the common causes of P0B5C?

A short to voltage in the battery voltage sense G circuit. A failed hybrid battery interface control module. A poor electrical connection at the interface control module. A failed hybrid battery pack.

Read hybrid battery block voltages on a scan tool. Inspect the battery interface control module connectors. Test the voltage sense G circuit for a short to voltage. Compare the battery block voltages against each other. Replace the interface control module or battery section if the fault stays. Clear the code and retest.

P0B5C

Hybrid/EV Battery Voltage Sense G Circuit High

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

What it means

P0B5C means Hybrid/EV Battery Voltage Sense G Circuit High.

Check these first

A short to voltage in the battery voltage sense G circuit
A failed hybrid battery interface control module
A poor electrical connection at the interface control module
A failed hybrid battery pack

What to do next

Read hybrid battery block voltages on a scan tool
Inspect the battery interface control module connectors
Test the voltage sense G circuit for a short to voltage
Compare the battery block voltages against each other
Replace the interface control module or battery section if the fault stays
Clear the code and retest

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Updated

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