P0DB3

Hybrid/EV Battery Cell Balancing Circuit B Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–167 (est.)

Symptoms

Reducing the range of an electric vehicle
Uneven battery charge
Reduced engine performance
Error indication on the dashboard
Increased charging time

Causes

Balancing board malfunction
Damage to battery cells
Balance circuit wiring problems
Battery controller software errors
Corrosion of balancing chain contacts

How to Fix

Diagnosis of battery cell condition
Checking the balancing circuit for breaks and short circuits
Balancing board testing
Battery controller software update
Replace damaged battery cells if necessary

Related codes

P0DB1 P0DB2 P0DB4