One problem related to air conditioner has been reported for the 2009 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Honda Odyssey based on all problems reported for the 2009 Odyssey.
The car's ac system is malfunctioning. The air conditioning will some times blow cold air and other times blow warm air when on the lowest temperature setting with the ac on. Also, it will sometimes blow hot air on the driver's side and cold air on the passenger's side. We've taken the vehicle to two different shops (non-Honda) and both have confirmed the unit is completely charged and can not determine what the issue is. A search on the issue seems that several other owners are experiencing the same issue with their vehicles.