You can take the module off and have it tested at an auto parts store, however mine tested good at Advance and the guy told me that his machine often makes the wrong call. Mine was acually bad so ask the person about this. They are in the $25 range so it is a pretty cheap fix and if your car has alot of miles on it replacing is not a bad idea. There is a way to check yourself but I forget how, someone on here knows.
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