Three problems related to check engine light on have 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.
Check engine light and tcs light came on while driving the van at highway speeds. The transmission shifts smoothly and sounds fine, but the repair shop pulled a code of p0740--tc clutch failure. The transmission is failing, and this is apparently a common problem with Honda Odysseys. While our transmission lasted longer than many Odysseys' do, I think that transmission failure at 119k is unacceptable.
Check engine light on; Honda dealer talks about transmission issue and asking it to be replaced. Replacement cost: $6500 I heard that many other Honda Odyssey owners complaints about transmission problem and it has to be addressed that Honda Odyssey van is having critical transmission issue built between year 1999 to 2004. Transmission became defective with no reason, so much frustrated as vehicle has hardly done 100k miles.
My wife was driving home late at night when all of a sudden the check engine light and tcs light come on in her 2004 Honda Odyssey. The van begins to slow down until it will go no faster than 5 mph. Pulling to the side of the road, she turned off the van then restarted it. She was able to get the last few miles back to our house luckily, and we brought the vehicle to a shop just up the street since it could not make it much further. It turns out the transmission needs to be replaced. The shop called Honda, knowing there had been a recall on the 2004 Odyssey transmissions, but Honda claimed that it did the work for the recall and had no further responsibility. I am extremely dissatisfied with this. To know there is a problem with a transmission, "fix" it with a recall, and still have problems with it on a vehicle with under 100,000 miles is unacceptable. I've owned Hondas in the past and never had a problem like this. Matter of fact, I've never had a problem like this with any car I've owned, no matter the manufacturer. My wife and I purchased a Honda minivan because it is supposed to be safe. But to have the vehicle stop working with no warning due to a transmission that Honda is aware is faulty is as far from safe as you can get. I'm just thankful she wasn't on the highway when it went out.