Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 360 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent P0036- 00 - HO2S Heater Control Circuit Bank 1 Sensor 2 Overview: Code Cause Effect on Vehicle Fault Code: P0036- 00 1. O2 sensor 2 wiring open circuit 2. Failed oxygen sensor heater circuit wiring 3. ECU Connector pin backout 4. ECU terminal pin damage or bend 5. Failed EMS ECU 1. MIL Lamp ON 2.Reduced vehicle performance 3. Disabled drive mode option Lamp status: Check Engine Lamp off Malfunction Indicator Lamp on Checkpoint: Check Battery Voltage at Ignition off (Nominal Range 11.5V ~ 12.8V) Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check whether the O2 sensor 2 connector is connected properly. - Step 2 Check whether the ECU connector is connected properly - Step 3 Check the continuity between O2 sensor 2 pins 1,2,3,4 and ECU pins B3 or B5 or B6, B57, B25, B7respectively. Check whether the supply voltage is 12 V at lambda sensor pin no. 1 - Step 4 Check the ECU terminal pin for any damage or bend. Check the ECU connector for any pin backout - Step 5 Check for O2 sensor functionality. Check whether it is reading values O2 sensor functions only after “Before DPF temperature” crosses 200 deg C/ Run the engine for few
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