P2BCC

Battery Charging System Negative Contactor B Stuck Closed

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Problems with charging a high-voltage battery
Warning messages on the dashboard
Reduced vehicle performance
The car may go into emergency mode
Possible problems with starting

Causes

Negative contactor B fault
Problems with the contactor control circuit
Short circuit in the system
Mechanical sticking of contacts
Problems with the battery management module

How to Fix

High voltage system diagnostics (qualified technicians only)
Checking control signals to the contactor
Contactor Resistance Testing
Replacing a faulty contactor
Checking and updating the battery management module software

Related codes

P2BCB P2BCD P0AA6