Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 110 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 P244A-11 - Particulate Filter Differential Pressure Too Low Bank 1 Overview: Code Cause Effect on Vehicle Fault Code: P244A-11 1.Aging of sensor 2.Sensor connection (short circuit to ground) 3.Electrical wiring 4.ECU connection 5.Sensor malfunctioning 6. Clogging of DPF 1.CE Lamp will glow 2. Vehicle performance deterioration Checkpoints: Check sensor Voltages for Differential pressure. Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check connector of DP sensor are connected properly Remove and connect again Step 2 Check for continuity between sensor connector pins 1, 2, 3 and ECU pins A57, A49, A45 respectively and for catalyst temperature sensors. Check the continuity between the sensor and ECU Step 3 Check the ECU connector is connected properly Connect the ECU connector properly Step 4 Check the sensors physically Physical check Step 5 Check air path leakage Physical check Step 6 Check actuator connections for VGT, Throttle and EGR Physical check Step 7 If the problem persists, replace the sensor - Step 8 Check connector of DP sensor are connected properly Remove and connect again Circuit Schematic Diagram:
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