I recently put in a K&N Drop in filter on my car today. In order to loosen the airbox enough to pull the old filter out I had to disconnect the mass airflow sensor. I did not unhook the battery, just the mass airflow sensor that plugs into the tube. Anyway, I went to turn my car back on and forgot to plug in the sensor, so I shut the car off, plugged the sensor in and restarted the engine.

Now my SES light is on and I after driving it around a bit it is still on. I search about the light, and some are saying reset the ECU but the information in those threads seems spotty and not very straight foward.

Should I reset the ECU with the ECU sticky, or wait and it will "learn" to adapt to the K&N filter; or do I have to go to a dealer and have them reset the SES light?

THanks

 

i did the exact same thing when i installed mine. it was on for about 3 days and then reset itself

 

That is good to hear lol. I swear when I looked at the mass airflow wire before I went to turn the car on it looked like it was in! Let me tell you though, I can hear the car pulling air when I get on it, has a great sound. Nice bonus for keeping up with regular maintenance

 

just reset the ecu and call it a day.

 

If you don't want to bother with the pedal ECU reset, just unhook the negative end of your battery and leave it for a while. When you turn your car on and your radio presets are all gone, that means it did the trick.

I do this before putting any modification on my car and I've never had problems afterward.

 

+1...

 

+2....

 

Drive to auto zone, borrow their code scanner, find the code, write it down, and then clear it. Then come back here and confirm that the code is in fact a maf code.