P0DB2

Hybrid/EV Battery Cell Balancing Circuit B Stuck Off

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Reduced range of an electric vehicle
Reducing the power of the hybrid system
Error indication on the instrument panel
Uneven charge of battery cells
Reduced battery efficiency

Causes

Faulty balancing resistors in circuit B
Open or short circuit in the balancing circuit
Poor contact in the balancing circuit connectors
Battery management module (BMS) malfunction
Software error in the control system

How to Fix

Diagnostics of the condition of balancing resistors
Balancing Circuit Continuity Check B
Inspecting and cleaning contacts in connectors
Checking BMS software for updates
Replacing faulty balancing circuit components

Related codes

P0DB0 P0DB1 P0DB3