Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 330 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent P0136 -00- O2 Sensor Circuit Bank 1 Sensor 2 Overview: Code Cause Effect on Vehicle Fault Code: P0136-00 1. Open circuit inside oxygen sensor or open power or ground wires to oxygen sensor 2. Exhaust system ground strap may have become corroded or broken 3. Failed EMS ECU 4. Failed oxygen sensor heater circuit wiring has failed Most likely you'll not notice any symptoms other than the MIL Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check for any open circuit inside oxygen sensor Continuity Step 2 Check for corrosion at exhaust system Functionality Step 3 Check for Wiring/connectors broken/frayed leading to sensor and/or relay Physical check Step 4 Check oxygen sensor heater circuit wiring Functionality Step 5 Check ECU Functionality Circuit Schematic Diagram:
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