What are the common causes of P0B58?

A faulty battery smart unit. A faulty HV battery assembly. A poor electrical connection at the battery smart unit connector. An open or short in the battery block voltage sense wiring.

Read the battery block voltages on a scan tool. Compare the battery block voltages for an erratic difference. Inspect the battery smart unit connector and wiring. Test the battery block voltage sense circuit for open and short faults. Replace the battery smart unit if the voltage sense stays erratic. Clear the code and retest.

P0B58

Hybrid/EV Battery Voltage Sense F Circuit Intermittent/Erratic

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

What it means

P0B58 means Hybrid/EV Battery Voltage Sense F Circuit Intermittent/Erratic.

Check these first

A faulty battery smart unit
A faulty HV battery assembly
A poor electrical connection at the battery smart unit connector
An open or short in the battery block voltage sense wiring

What to do next

Read the battery block voltages on a scan tool
Compare the battery block voltages for an erratic difference
Inspect the battery smart unit connector and wiring
Test the battery block voltage sense circuit for open and short faults
Replace the battery smart unit if the voltage sense stays erratic
Clear the code and retest

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Updated

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