I recently purchased a 2004 Durango with a 5.7 engine. The truck runs very well and idles smooth. The check engine light came on the 2nd day I had the truck (naturally right). A check with a scan tool at the local auto parts store showed P0171 and P0174. I am looking for some direction for troubleshooting the problem. Can the O2 sensors cause this problem? If so is there a way to test the O2 sensors with a multimeter? Any help is appreciated. Thanks

 

http://www.obd-codes.com/p0171

http://www.obd-codes.com/p0174