P0DDB

Hybrid/EV Battery Cell Balancing Circuit L Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Reduced range on a single charge
Increased charging time
Battery warning on instrument panel
Reduced power during acceleration
The car may go into emergency mode

Causes

Open or short circuit in the balancing circuit
Faulty balancing resistors
Problems with the Battery Management Module (BMS)
Severe voltage imbalance between cells
Contact corrosion in battery connectors

How to Fix

Diagnostics of the state of all battery cells
Checking the integrity of balancing circuits
Testing Battery Management Module (BMS) Operation
Replacing damaged balancing resistors
Calibrating or replacing faulty battery cells

Related codes

P0DDA P0DDC P0AFA