Mass Air Sensor

[jbing2727]

About six months ago my 2011 Altima 2.5L had the check engine light come on. The car has 95000 on it. The code checked out to be the mass air sensor. I purchased another one and the problem was resolved for about a month. I got another one and it worked fine for about a week and the check engine light came back with the same code. The car seems to run fine. Unplugging the sensor hasn't caused a change in how it runs either. Gas mileage is no worse, but the check engine light won't go out and I've got to get this car inspected by the end of the month. I looked through the forum and haven't seen anyone with the same problem. Any ideas? I'd sure hate to buy another MAF sensor.

[04pathse]

Well, there is a TSB that relates to the MAFS, an update to the ECM, find out if that has been done. TSB is NTB-12-051
Also, it could be an intake air leak, check for cracked hoses.
Are there any other codes besided the p0101? could be a dirty throttle body, try cleaning it and see if it fixes the issue.
I saw a thread on an Altima forum with same issue and it turned out to be a dirty throttle body.
Your vehicle has close to 100k miles on it so if the throttle body has never been cleaned it probably needs it by now anyway.
Here is a youtube video on how to clean the throttle body, the 2011 should be the same or very similar...

https://www.youtube.com/watch?v=3y67i4cW5Uc

[samesse]

I had a similar issue that I fought for a while. Replaced the MAf twice, had ECM reset, reflashed, idle air relearn procedure performed and ultimately I replaced the throttle body and it fixed the issue for good.