Kanger2.0: DTC Troubleshooting Document for BMS Version: 3.0 Date: 14th Jan 2022 Copyright © TATA MOTORS Ltd. This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author. P121D - 21:- BMS battery discharging temperature low first level alarm - signal amplitude < minimum ................................................................................................. 26 P121F - 21:- BMS battery discharging temperature low third level alarm - signal amplitude < minimum ................................................................................................. 27 P1220 - 22:- BMS temperature difference high first level alarm - signal amplitude > maximum ..................................................................................................................... 28 P1223 - 19:- BMS discharging current overload first level alarm - circuit current above threshold........................................................................................................... 29 P1224 - 19:- BMS discharging current overload second level alarm - circuit current above threshold ............................................................................................. 30 P1225 - 19:- BMS discharging current overload third level alarm - circuit current above threshold........................................................................................................... 31 P1226 - 19:- BMS feedback current overload first level alarm - circuit current above threshold........................................................................................................... 32 P1227 - 19:- BMS feedback current overload second level alarm - circuit current above threshold........................................................................................................... 33 P1228 - 19:- BMS feedback current overload third level alarm - circuit current above threshold........................................................................................................... 34 P1229 - 1A:- BMS insulation fault first level alarm - circuit resistance below threshold...................................................................................................................... 35 P122A - 1A:- BMS insulation fault second level alarm - circuit resistance below threshold...................................................................................................................... 36 P1231 - 1A:- BMS insulation fault third level alarm - circuit resistance below threshold...................................................................................................................... 37 P1232 - 27:- BMS SOC jump fault - signal rate of change above threshold ........... 38 P1233 - 17:- BMS power supply high fault - circuit voltage above threshold ........ 39 P1234 - 16:- BMS power supply low fault - circuit voltage below threshold .......... 40 P1235 - 13:- BMS_NegMainRlyConglut - circuit open .............................................. 41 P1236 - 13:- BMS_PosMainRlyConglut - circuit open .............................................. 42 P1237 - 13:- BMS_HVILAlarm charging second level alarm.................................... 43 P1238 - 16:- BMS_PrechargeFaultAlarm third level alarm - circuit voltage below threshold...................................................................................................................... 44 U1301 - 87:- BMS lost communication with VCU third level alarm - missing message....................................................................................................................... 45 U1302 - 87:- BMS Daisy Chain communication fault discharging first level alarm46
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