So yesterday, as I get home from work, I notice my Malfunction Check Engine light is on.

Today I took it by Autozone and they read the code - P1486, Cooling System Malfunction.

Autozone suggested I replace the thermostat or check the coolant levels. I'm full up on coolant and my car doesn't appear to be running hot or taking too long to start blowing hot air, although my heater's air does have a hint of gasoline smell in it that I'm a bit curious about.

So some research yielded a service bulletin that ECM could possibly be the problem and that it's throwing a false code. So if I do need to replace it, is this only something that can be done at the dealer? If so, what's the damage? I've heard a quote of around $800 to replace the damn thing.

Any way I can turn the light off until I save up some cash for this?