Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 281 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 P2000-00: NOx Absorber Efficiency below Threshold Bank 1 Overview: Code Cause Effect on Vehicle Fault Code: P2000-00 1. LNT Malfunction – Low NOx conversion 2. High Sulphur storage in LNT due to improper DeSOx or incorrect fuel usage 3. Faulty Intake Throttle 4. Lambda sensor wiring damage /connectors broken 5. Abnormal driving pattern 6. Soot accumulation in wraf sensor 7. Oil entry from the turbo charger out to DOC inlet 8. Short or Open in the Lambda sensor heater circuit 1.MIL Lamp ON Lamp status: Check Engine Lamp off Malfunction Indicator Lamp on Checkpoints: Check if any AMF, Throttle, EGR, VGT, WRAF, MDP related faults is present. If present, address it first Check whether correct fuel is used without adulteration. Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check for any short or open in the heater circuit in the sensor - Step 2 Check for Lambda and intake throttle sensor functionality - Step 3 Check for Wiring damage/broken connectors of Lambda sensor or intake throttle feedback sensor - Step 4 Check if there is any oxidation, rust, mud, dirt, foreign particle accumulation on the connector -
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