P0B23

Hybrid/EV Battery A Voltage

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Reduced vehicle power
Switching to emergency mode
Dashboard warning
Reduced range
Charging problems

Causes

Battery cell failure
Problems with cell balancing
Battery controller malfunction
Damage to high voltage wiring
Contact corrosion

How to Fix

High voltage system diagnostics
Checking the voltage of individual modules
Balancing Circuit Testing
Checking the condition of contacts and wiring
Replacing faulty battery modules

Related codes

P0B24 P0B25 P0B26