P0102 - mass or volume air flow circuit low input, 99 Boxster

[us928]

Thanks for the reply, I had the code for a while (year or so), I replaced the MAF a year ago, i had no codes for a week then back again, I also replaced Air/Oil separator, Oil fill tube and oil stick tube. i just cant get rid of this code, I had a 02 sensor Bank2 code, ordered the 02 sensor and got it today but check the code and was P0102, when i clear the code it comes back on after 2 or 3 miles of driving.