OBD Guide

P2BC6

Battery Charging System Positive Contactor B Stuck Open

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Charging system fault warning on instrument panel
  • Reduced battery charging efficiency
  • Problems starting the hybrid system
  • Reducing electric range
  • Activation of emergency operation

Causes

  • Mechanical jamming of contactor B
  • Open or short circuit in the contactor control circuit
  • Faulty relays or fuses
  • Problems with the charging system control unit
  • Contactor contact corrosion

How to Fix

  1. Check the condition of contactor B visually
  2. Test contactor control circuit
  3. Check fuses and charging system relays
  4. Replace faulty contactor if necessary
  5. Scan the control unit for additional errors

Related codes

Error P2BC6 by Vehicle Brand