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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
My check engine light recently came on. The error code is P1491. What is wrong and how can I fix it? It has 33K miles now. Also, my truck has always gotten 14 mpg town and 20 highway. Is this about average? Thank you.
Thank you for your suggestion. I have had three fill ups since the light came on and tightening the gas cap did not make it go out. It still runs good with no obvious problems other than the light.
I checked it out at Autozone and the dealer...my problem was the condenser fan drew too much current and blew the fuse. Check your fuse for the AC condenser fan. The dealer wanted crazy money to replace the condenser fan...there is a TSB on it I believe. I replaced my fuse 10k miles ago and I haven't had an issue since. Even the error code reset and cleared out go figure.
You can also try resetting you computer by disconnecting the negative battery lead for a few minutes. Some of the codes won't clear until so many starts without the problem present.