NEXON 3.0 EV DTC Troubleshooting Document for VCU Version: 2.0 Date: 22-Sep-2023 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. P3008 - 4B: - Power Distribution Unit Positive Busbar Thermistor - over temperature Overview: ISO Code P3008- 4B Customer Symptom The vehicle is drivable as per driver inputs. No effect on vehicle drive ability Fault Effects (On Vehicle) The vehicle is drivable as per driver inputs. No effect on vehicle drive ability Lamp Status (If Any) HV Critical alert telltale is ON Fault Detection Condition Over temperature, the vehicle controller detects condition, when the temperature sensor of positive busbar in PDU is greater than normal operating range. Normal Operating Condition 3in1 combo busbar temperature sensor value is within the operating range. Probable Trouble Area LV wiring Harness 3 in 1 Combo temperature sensor mounting on busbar Powertrain VCU connector Healing Condition If DTC trigger condition is healed, DTC is present only in memory. However, cluster indication will be ON until one drive cycle of vehicle, until DTC is cleared using tester tool. Component Details: Positive Busbar thermistor transmits temperature of positive busbar to Vehicle controller unit. Preliminary Checks: 1. Check for loose connection of LV wiring harness between VCU and 3 in 1 Combo LV connector 2. Check for damage to LV wiring harness connections between VCU and 3 in 1 Combo LV connector 3. Visually inspect 3 in 1 Combo for damage
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