P0BBD

Hybrid/EV Battery Pack Voltage Variation Exceeded Limit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–889 (est.)

Symptoms

Reduced vehicle power
Reducing the range of an electric vehicle
Check Engine Light Illuminated
Reduced efficiency of regenerative braking
The car goes into emergency mode

Causes

Worn or damaged battery cells
Faulty cell balancing system
Problems with the Battery Management Module (BMS)
Corrosion or poor contact in the high voltage circuit
Overheating of battery cells

How to Fix

Diagnose the condition of the high-voltage battery
Check the operation of the cell balancing system
Test the Battery Management Module (BMS)
Check connections and integrity of the high-voltage circuit
If necessary, replace faulty battery cells

Related codes

P0A7D P0A80 P0BBD