It will let you read and reset the codes. You can get a code reader from Amazon that works with 1996 and up vehicles for about $15. They will have a letter followed by four numbers, for example 'P1234'. You can have codes read at Auto Zone, Pep Boys, O'Reilly's, etc., for free in most states.

Get OBD codes! If you have a Check Engine (CEL) or Service Engine (SEL) Soon light on, get the codes read and have them available if possible befoer posting. We're here to help you, but not to assist in negotiating with mechanics (this is business/life advice, not repair advice) or to tell you what car you should buy. Also respect those that take the time to answer questions and remember that many are professional mechanics, who normally get paid very well to diagnose automotive repairs. Treat those asking for help with respect, and answer without bias toward them, their situation, or their knowledge (or lack thereof) about the repair issues. Post disappeared? Read the following guidelines, and if you think it still is relevant, message the mods to free it from the spam filter.

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