P0B2B

Hybrid/EV Battery C Voltage

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Reduced vehicle power
Reducing electric range
Check Engine Light Illuminates
Hybrid system warning
The car goes into emergency mode

Causes

Voltage imbalance between module C cells
Battery module failure
Problems with the Battery Management System (BMS)
Damage to high voltage connections
Corrosion or oxidation of contacts

How to Fix

High voltage system diagnostics
Checking the voltage of all module C cells
Battery Management System (BMS) Testing
Replacing a faulty battery module if necessary
Check and clean all high voltage connections

Related codes

P0B2A P0B2C P0B29