P2BC5

Battery Charging System Positive Contactor B Stuck Closed

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Constant battery charging
Battery overheating
Warning messages on the instrument panel
Reduced charging system efficiency

Causes

Mechanical contactor jamming
Control circuit malfunction
Contactor relay problems
Short circuit in wiring
Malfunction of the charging system control unit

How to Fix

Check the condition of contactor B
Diagnose the contactor control circuit
Check relays and fuses
Inspect the wiring harness for damage
Replace faulty contactor if necessary

Related codes

P2BC4 P2BC6 P0AA6