42, The meaning of life
Join Date: Jul 2009
Location: Melbourne, Australia
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Welcome to the Werkz. Someone here will be able to give you some more specific help.
One way to check your MAF is to simply disconnect it and see if the performance of the car changes at all. If it get better then your MAF may be shot, you can sometimes clean them up with Brake Cleaner, but remove it from the car before you so that.
How long has the engine light been on for? Are there any performance issues with the car? The injectors could be clogged, dirty fuel filter reducing fuel rail pressure, blocked air filter, stuffed O2 sensors.