check engine light on 2000 Ford Ranger

we have a 2000 ford ranger xlt.the check engine light has came on once before and the shop cleaned the sensors and now the check engine light is back on and wont go off what do i do?

Asked by for the 2000 Ford Ranger
The shop obviously did not properly repair the truck. It sounds like they cleaned off the Mass Air Flow Sensor, which I find to be only a temporary fix.
Get the exact code and get back to me and I will help you, or if possible, find a better shop.