Help on road headed back to MT got an MIL light! Need to find out problem not the fuel cap. I read from previous years about how you can check error messages but have not been successful yet any suggestions?

 

Significant drop in milage towing trailer after check engine light came on everything seem to be running good just draining full. HELP!

 

there is a key procedure to check the codes. someone will chime in here so you can go check them. but you probally need to go to the dealer and have them update your computer with the latest flash. that should fix your problem.s

 

You may have to have the parking brake firmly set for the codes to show!

http://www.allpar.com/fix/computer-codes.html

Hope this helps... these are for 2005... I wouldn't imagine they would change much...

 

yep this is it:

To retrieve OBDII Error codes from your Chrysler/Jeep/Dodge vehicle, do the following sequence with the key: ON-ACC-ON-ACC-ON and look at the odometer, that is where codes will be displayed. Here are the codes that you may/can get.