Pretty much every local auto parts store will check your computer for error codes (for free) and tell you what they are. However, they typically will not erase the codes due to liability issues.
Here's Danny at my local O'Reillys Auto Parts store checking the computer for error codes.
Now, I didn't actually have any error codes but they come in a format like P0420. For my car that was a Catalyst System Efficiency Below Threshold. I had this code a while ago due to putting premium gas in instead of regular.
If the employees at the store aren't able to give you information on your particular error code, the Internet surely will. You can typically Google the code and find a solution somewhere in a public forum.
This is good advice when it comes to a vehicle's check engine light. Drivers should definitely find out what the problem is, before the problem gets worse and ends up costing more money later. For some Dodge vehicles built in the 2000's, the error code can be accessed by simply turning the ignition on & off twice, and then to the on position.The code will show up on the instrument panel and then the vehicle's owner can follow your advice and look for the code on the Internet.
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