Vehicle Platform: NEXON ECU Name: ESCL DTC Troubleshooting Data Version: 1.4 Date: 09 Jan 2018 Author: Hitesh Kaneria Page: 8 of 88 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. U0028-88:- Vehicle Communication Bus A-Bus off Overview: ISO Code U0028-88 Customer Symptom EPAS lamp ON , CE Lamp ON,MIL Lamp ON,ABS Lamp ON,TCM Lamp ON,SRS Lamp ON,EBD Lamp ON Fault Effects (On Vehicle) Vehicle cranking will not happen. Lamp Status (If Any) Vehicle cranking will not happen. Fault Detection Condition Short circuit between CAN_H -CAN_L, CAN_H -GND, CAN_L-Vbatt lines. This DTC may also get logged in case of CANH OR CAN L open circuit. Normal Operating Condition ECU communicates properly with all ECUs. Probable Trouble Area CAN_H and CAN_L wires Healing Condition Removal of the above mentioned shorts/open in the wiring harness or at ECU pin. Table 2: U0028-88 overview details Troubleshooting: U0028-88:- Vehicle Communication Bus A - short circuit Start Read DTC with diagnostic tool.. This DTC will be in history. Clear DTC End
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