Ok guys here is my story, i had the car parked all day yesterday, and when i weht to use it today i got the engine light on, after browsing the web and serching for info, i found out that the engine light could have been caused for many thing, one of the thing that i read was that the gas cap could be loose, so i checked the cap and it was loose, now i tighten the cap, but the engine light still on. now dod i need to reset the engine light, how do i do it, and if there anybody near NY or NJ in hear who has the OBDC II that can do it for free cause right now i have to money, i am under a budge cause im going to school, please anybody help me.

P.S in case that is not the problem of this, what else can i check, in order to find out the problem? thanks in advance

Leaving the gas cap too loose is a common cuase of the CEL going on. Fortunately, it's one of the few CEL codes that will clear itself out after the car has been started a few times.

If the CEL doesn't go away after a few days, you should find someone that has an after market BMW code reader (or go buy one) and have them read the code that's stored in the car's computer. Then you'll know for sure what the cause of the problem is.

another thing, is there anybody near by NJ, or NY that can read the code for free or reset the engine light, because i really cant afford to buy one, please thanks in advance