![]() ![]() You’ll want to move on to the next steps once the battery is reconnected. If you still choose to move forward with disconnection, leave it for a few minutes before putting everything back. However, when you do this, all of the radio presets, seat memory and clock settings will also be erased. Some people opt to disconnect the car battery. Otherwise, you must perform the relearn manually. Sometimes, it’s easy to force a relearn with your code scanner if it’s a high-end model. ![]() If you fail to do this, the engine could run rich or lean, meaning the mixture is imbalanced. The ECU requires a reset to adjust the air-fuel mixture properly. Clear/Relearn Data (If Possible With Your Scanner) Once the system is reset, the Check Engine Light shouldn’t come back on unless there is still a problem. With your code scanner, you can reset the system. To get that light off now, you need to reset the trouble codes. This process would have turned on the Check Engine Light. When the mass air flow sensor was bad, your car’s ECU sent out a diagnostic trouble code to get your attention. It’s fragile and can lead to damage if handled. It’s also important to avoid touching the element in the MAF sensor. When you reconnect the new sensor to the airbox and intake hose, it could remain loose, which would lead to trouble. Inspect the InstallationĪfter the new MAF sensor is installed, it’s important to double-check all of the connections. Let’s break down each of these steps a little further. But, if you want to be sure to make everything properly or have issues after the MAF sensor replacement, check out this. ![]() However, in some car models, it will be enough to just replace the mass air flow sensor. It’s also wise to take a good test drive afterward. After this, the ECU needs to be reset, so you should start the vehicle and let it idle. First, you must inspect the installation and reset the trouble codes. In many car models, you can’t simply put a new mass air flow sensor in and expect everything to run smoothly. Conclusion MAF Sensor Replacement What To Do After Replacing Mass Air Flow Sensor? ![]()
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