Help on P1195 code for Mazda MX-6

Hi All,
I own a Mazda 1996 MX-6 and the Check Engine Light came on 1 month back. I got it checked it at AUTOZONE and it gave a P1195- Air-fuel metering code. The problem is that the CEL light goes ON and OFF randomly and everytime I check it at Autozone it gives the same number P1195. The strange thing is that if it is a rainy day or not so hot day the CEL light is OFF and it turns ON if it is a hot day. I did not have this problem the whole winter. Is this problem something serious. I do the normal walmart oil change regularly. Last time i did it was during january, when they would have used oils for winter season. Does anyone think this might be a problem.

I used GUM out to clean the fuel injector and the light did not show up a week. Does anyone know whats happening. It will be really appreciated if someone can guide me through so that I can have a rough idea before taking it to the dealer.

Thanks in advance 

Manoj