Two problems related to warning light on have been reported for the 2007 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Honda Odyssey based on all problems reported for the 2007 Odyssey.
Air bag warning light on. Dealer said it was right front sensor which they replaced. It did not fix it and now they say the control system is bad and air bags will not work. Perhaps this is related to other Honda air bag recalls. This is the third major safety issue with this vehicle, brakes (recalled), steering (recalled) and air bags.
Within a couple of weeks after purchasing a brand new 2007 Honda Odyssey, the airbag warning light illuminated and stayed illuminated (occasionally turning off). We brought the car in to a dealership for service on 7/16/07 but a few days of using the car (we only use it once a week, sometimes less) the warning light turned on again. Also, now the "passenger airbag off" light now occasionally turns on, even when there's an adult in the passenger seat (this light is supposed to illuminate only when there's a child-size object or passenger). We are going to take it in for service again.