Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 110 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 P268F - 00- Cylinder 4 Injector Data Incompatible Overview: Code Cause Effect on Vehicle Fault Code: P268F- 00 1. C3I data not written in ECU for cylinder 4 1. CE Lamp ON 2. Increased engine noise 3. Reduced vehicle performance 4. Disabled drive mode option Lamp status: Check Engine Lamp on Malfunction Indicator Lamp off Checkpoints: 1. Check Battery Voltage at Ignition off (Nominal Range 11.5V ~ 12.8V) Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check C3I value for cylinder 4. Update the C3I in ECU, if not present - Verification condition: Drive the vehicle in city and highway condition. Circuit Description: ECM injects fuel in the cylinder with the help of injectors. ECM monitors the engine sensors and determines the precise quantity of fuel to be injected. ECM turns the injector on for a precise amount of time referred to as injection pulse width or injection duration to deliver the calculated fuel in cylinder. Injector is turned on through high side driver (supply) as well as low side driver (ground) present.
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