FixVault

DTC Detection Logic

NOTE: If DTC P31A5 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P31A5 COMMUNICATION ERROR (CAN communication data error) When ECM detected data error of CAN communication.
  • ECM
  • Li-ion battery controller
  • Traction motor inverter
  • HPCM