Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 112 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 P268A- 00: Fuel Injector Calibration Not Learned/Programmed Overview: Code Cause Effect on Vehicle Fault Code: P268A41- 00 1. ECU connector loose connection 2. ECU hardware malfunction 1.CE Lamp On 2. Reduced vehicle performance 3. Engine misfire possible 4. Disabled drive mode option Lamp status: Check Engine Lamp on Malfunction Indicator Lamp off Checkpoints: Check Battery Voltage at Ignition off (Nominal Range 11.5V ~ 12.8V) Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check whether ECU connector is connected properly - Step 2 Check injector connectors are connected properly. Check the continuity. Cylinder 1 injector pins 1,2 to ECU pins A23, A02; Cylinder 2 injector pins 1,2 to ECU pins A65, A86; Cylinder 3 injector pins 1,2 to ECU pins A64, A85; Cylinder 4 injector pins 1,2 to ECU pins A22, A01 respectively. If there is any missing continuity, correct it. - Step 3 If the problem persists, replace the ECU - Verification condition: Drive the vehicle in city and highway condition. Circuit Schematic Diagram: NA
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