Vehicle Platform: All ECU Name: Telematics Control Unit (TCU) DTC Troubleshooting Data Version: 1.12 Date: 02-06-2022 Author: TCM COC Page: 146 of 150 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. B281B - 00:- Cloud Communication Error – no subtype information Overview: ISO Code B281B– 00 Cloud Communication Error – no subtype information Customer Symptom Telematics ECU features will not be working Fault Effects (On Vehicle) Remote , Vehicle security, Alerts and other telematics features will not be working Fault Detection Condition Relevant functional DTCs present in TCU .DTC is set in case of SIM card error with TCU. Normal Operating Condition TCU having proper functioning SIM card in normal condition. Probable Trouble Area TCU is not registered or Onboarded on cloud platform Faulty TCU Healing Condition 7. Verify DTC ageing-Clear in case of ageing 8. Verify any other communication related DTCs present 9. Verify TCU DTCs and check for any related DTCs 10. Follow TCU trouble shooting guideline to clear the relevant functional DTCs 11. Register/Onboard TCU device on cloud platform 12. If problem persists after above steps (from 1 to 5) then replace TCM
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