{Osprey CCM} DTC Troubleshooting Data Version: 2.0 Date: 28-Jul-17 Author: ERC Page: 228 of 244 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. U0401-81:- Invalid Data Received From ECM Overview: ISO Code U0401-81 Customer Symptom Reduced climate functionality and performance. Cooling does not happen as per user set temperature request. Fault Effects (On Vehicle) 1) Accurate heating/Cooling cannot be achieved 2) Cold start compensation for Blower and Air distribution will not be possible Lamp Status (If Any) N.A Fault Detection Condition Relevant functional DTCs present in ECM Normal Operating Condition ECM ECU sends correct data in normal condition. Probable Trouble Area Incorrect data received from ECM. Healing Condition After rectifying relevant functional failures in the ECM ECU
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