Q501 4 Cylinder MT Application DTC Troubleshooting Data Version: 0.1 Date: 21-Sep-2018 Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta Checked By: Yogesh Jadhav Approved By: Satish Kumar P Page: 132 of 1052 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. P24A4-92: Soot load and mileage with Diesel Particulate Filter lamp ON Overview: DTC Description as per ISO standard Soot load and mileage with Diesel Particulate Filter lamp ON - Performance or Incorrect Operation ECU Pin Number Not applicable Customer Symptom MIL ON. Fault Effects (On Vehicle) Torque limitation. Regeneration off Lamp Status (If Any) MIL ON,DPF lamp ON Fault Detection Condition (Root cause) Ignition ON engine ON Normal Operating Condition Fault condition no more present. Probable Trouble Area Too high soot accumulated at exhaust. Healing Condition Rectify the error Clear through diagnostic tool Ignition OFF & ON Component Details: The Differential Pressure Sensor for DPF function is to measure the pressure drop across the Diesel Particulate Filter system and send to ECU an output signal of the differential pressure drop. The sensor shall be mounted on engine or chassis, and receives its pressure input from two direct ports attached to the pressure sources across the DPF. In order to operate in severe air pressure conditions (presence of soot or condensate contamination), sensor element must have an high degree of robustness against chemical corrosion. Preliminary Checks: 1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If Yes, go ahead with next steps. If not, check for other DTC’s presence. 2. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to Earlier issue closure. 3. Check whether the EMS is receiving Battery supply and Ground. 4. Check whether the Battery is healthy.
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