P1B74 – Battery Cell Fault (Kia / Hyundai Hybrid)

P1B74 – Battery Cell Fault (Kia / Hyundai Hybrid)

SYMPTOMS:

  • Warning light displayed
  • Engine runs more often than normal
  • EV mode disabled

POSSIBLE CAUSES:

  • One or more HV battery cells faulty
  • Increased internal resistance or low cell capacity