What is the fuel injector coding matching method?
2 Answers
Enter diagnosis and select VIN auto-parsing, choose the corresponding vehicle model and year, select common special functions, and then choose fuel injector quantity matching. Select 'No' if not installed (select 'Yes' if installed), view the currently stored value, and select to input a new matching value. Manually input the required matching value, confirm whether the input matching value is correct, and confirm to store the matching value into the DME. Confirm whether to turn off the engine, and the new matching value is successfully written.
I once replaced the fuel injectors myself, and the engine shook badly. Later, I learned the importance of coding matching. Simply put, when you install new fuel injectors, you need to use an OBD scanner to connect to the vehicle's computer and input the specific code of the new injectors so the ECU can recognize the injection volume and timing. Otherwise, the engine might smoke or fuel consumption could increase. My approach was to remove the key and wait a few minutes for the system to reset, then use a professional diagnostic tool to read the current settings, clear the old code, and manually input the new one before testing if the engine runs smoothly. Now that I have experience, I love sharing this: if regular car owners aren’t familiar with the tools, it’s best to visit a 4S shop—engine safety is no joke. After replacing parts, checking whether the idle and acceleration are stable can effectively prevent minor issues.
