Check Engine light Funny business?

[Designo_E320]

Hi all,
Here is another brain teaser for you guys. Its got me scratching my head.
My CE light came on a few weeks ago and I pulled the codes for MAF. Well I ordered a new MAF but I just wanted to try to clean the old one with the CRC cleaner. I cleaned the hell out of it and guess what? the CE light went off.
Now however, the CE light will come on sometimes and will stay for days until I drive the HELL out of the car basically redlining it a few times on take offs. The next time I start the car afterwards the CE light will be gone for days and then I will take it very easy and then it will go on again until I drive the hell out of it again. When the light is out I can't pull any codes as there are no codes saved. I guess next time I need to have the codes read right when my CE light is on. What would cause this symptom? I will definitely change my MAF but this is weird. My car runs flawlessly. HMMMMMM