Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 477 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 P22B6-00- O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 2 Overview: Code Cause Effect on Vehicle Fault Code: P22B6-00 1. Lambda 2 sensor is drifted 2. Faulty O2 Sensor 2 - downstream 3. Carbon Buildup on O2 Sensor 2 4. Excessive exhaust leakage 5. Excessive intake air path leakage 6. Corroded or damaged connector 7. Faulty or damaged wiring 8. ECU connector pin backout 9. ECU terminal pin damage or bend 1.CE Lamp ON Lamp status: Check Engine Lamp on Malfunction Indicator Lamp off Check points: Check for any AMF, EGR, Throttle, MDP, VGT, ADC, Injector related faults. If present, address it first. Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check for physical damage in O2 sensor(s)/ Connector - Step 2 Check for any damage in electrical wiring/Connector (Burnt or cut wire) - Step 3 Check the electrical pin connections in B57, B25, B7. Check for any pin backout in lambda sensor connector - Step 4 Check the ECU terminal pin for any damage or bend. Check the ECU connector for any pin backout - Step 5 Check for foreign particles in the connector - Step 6 Check for any carbon Buildup on O2 Sensor. Clean the carbon deposits without damaging the O2 sensor. - Step 7 Check for Air or Exhaust leak. Arrest leakages. -
RkJQdWJsaXNoZXIy MTIwNTUz