P0DD9

Hybrid/EV Battery Cell Balancing Circuit L Stuck On

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Reduced electric vehicle range
Extended battery charging time
Warning messages on the dashboard
Reduced overall vehicle performance
Battery compartment overheating

Causes

Cell balancing module malfunction
Balancing circuit relay stuck
Wiring harness damage
Corrosion of electrical contacts
Control module software error

How to Fix

Diagnostics of the balancing system using a scanner
Checking the integrity of the wiring harness and contacts
Balancing Circuit Relay Testing
Replacing faulty system components
Updating the control module software

Related codes

P0DDA P0DDB P0DDC