NEXON 2.0 EV DTC Troubleshooting Document for VCU Version: 1.0 draft Date: 31-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. U0164 - 08: - Lost Communication with Heating Ventilation and Air-Conditioning (HVAC) module - Bus Signal / Message Failures ......................................................................................................................... 700 U132C - 08: - Lost Communication with Gear Selector Switch (GSS) module - Bus Signal / Message Failures...................................................................................................................................................... 704 U1322 - 08: - Lost Communication with Battery Management System (BMS) module - Bus Signal / Message Failures ...................................................................................................................................... 709 U132B - 08: - Lost Communication with compressor module - Bus Signal / Message Failures ............. 714 U1321 - 08: - Lost Communication with Motor control Unit (MCU) module - Bus Signal / Message Failures...................................................................................................................................................... 719 U0151 - 08: - Lost Communication with Supplementary Restraint System (SRS) module - Bus Signal / Message Failures ...................................................................................................................................... 726 P3041 - 68: - VECU received BMS derate flag CAN Signal from BMS – event information .................... 730 P3089 - 68: - VECU EEPROM write successful for Crash Detection - event information ....................... 732 P3086 - 68: - Difference in High voltage between PDU and HV battery - event information ............... 734 P308A - 68: - Low mismatch in requested torque from VECU and E-drive feedback Torque - event information ............................................................................................................................................... 740 P308B - 68: - High Mismatch in requested torque from VECU and E-drive feedback Torque - event information ............................................................................................................................................... 742 P308C - 1A: - Isolation resistance value received from BMS over CAN-circuit resistance below threshold................................................................................................................................................... 744 P3084 - 68: - High Voltage battery Level 3 Fault CAN signal received by VECU - event information .... 746 P3085 - 68: - E-drive MCU Level 3 Fault CAN signal received by VECU - event information ................. 749
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