P0BAB

Hybrid/EV Battery Voltage Sense W Circuit Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–889 (est.)

Symptoms

Reduced vehicle power
Malfunction warning on the dashboard
Battery charging problems
The car goes into emergency mode
Unstable operation of the hybrid system

Causes

Low voltage battery
Damage to battery cells
Problems with voltage measurement circuits
Battery management module malfunction
Corroded or loose connections

How to Fix

Check the condition of the high-voltage battery
Test voltage measurement circuits
Check battery connections and terminals
Diagnose the battery control module
Repair only from an authorized dealer

Related codes

P0BAC P0BAD P0A7F