What are the common causes of P0B52?

A short to power in the voltage sense E circuit. An open in the voltage sense E reference. A failed battery pack voltage sense E sensor reading high. Corrosion in the voltage sense E connector.

Read battery pack voltage sense E on a scan tool. Check the sense E circuit for a short to power or an open. Compare the sense E reading to actual pack voltage. Inspect the sense E connector for corrosion. Replace the sense E sensor if the reading stays high. Clear the code and retest.

P0B52

Hybrid/EV Battery Voltage Sense E Circuit High

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

What it means

P0B52 means Hybrid/EV Battery Voltage Sense E Circuit High.

Check these first

A short to power in the voltage sense E circuit
An open in the voltage sense E reference
A failed battery pack voltage sense E sensor reading high
Corrosion in the voltage sense E connector

What to do next

Read battery pack voltage sense E on a scan tool
Check the sense E circuit for a short to power or an open
Compare the sense E reading to actual pack voltage
Inspect the sense E connector for corrosion
Replace the sense E sensor if the reading stays high
Clear the code and retest

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Updated

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