Start by getting the right gas cap. If the Check Engine light doesn't go off by itself after a few engine starts, try disconnecting the battery negative cable for a minute or two.
If you need to have the fault code manually erased there are a few inexpensive code readers used by the auto parts stores that will do that, but most of the time you need a full scanner. A lot of shops use the Chrysler DRB3 because with an extra plug-in card it will work on all other car brands including yours. Mine cost $6200.00. There are a lot of aftermarket scanners that will also work on your car but they cost more and the shops have to keep paying every year to have them updated. That's why they charge you when they connect them to your car. The going rate is commonly between $50.00 and $100.00 but most shops charge less to just read or erase codes because it doesn't take very long. They also usually don't charge for using the scanner if its use is part of a diagnostic procedure and you have the work done by them. In that case the cost of buying it and maintaining it is part of the hourly labor rate the shop charges.
Monday, April 29th, 2013 AT 8:10 PM