One problem related to engine cooling system has been reported for the 2004 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Honda Odyssey based on all problems reported for the 2004 Odyssey.
I bought this Odyssey from jim coleman Honda in maryland in 2006 with extended warranty. This is 2004 model. The ac worked 2006 but in 2007 it di not work when we needed. I called the Honda and was told that they do not cover ac under the warranty. I took my Odyssey to criswell Honda in germantown in maryland and paid $100. 00 for the diagnostic. It worked fine for a week and again no ac. After that we went to india in Sep 2007 and rtn in Dec 2007. When the summer came in 2007 we had no ac I took the van again to criswell Honda and explain to them that they fixed this in 2007 they looked and said that there is a leak and will cost $55. 00 to fix it. I fought back and after talking to the manager they said it will cost $50. 00. I paid and after 3 days again no ac. Come 2009 may I took it to my local mechanic and was told that theirs is no visible leaks at this time but they need to put the dye to chk any leak and will cost me $560. 00 . I guess that it is regular problem with Honda and they are well aware of this. Good way to make money and spoil your name. I had a Honda accord 95 model and never had issue with the ac. I am going to write to Honda in japan about this. I have just called the american Honda and got the standard answer from ms marlyn that there is no recall or advisory from Honda on this. Take your vehicle to the dealership and she opened a case no for me. Lets fight together. Aejaz.