Fuel Cap Warning Message (without Multi-information display): Notes
WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
The PCM detects whether the fuel fill cap is loose or missing under certain conditions and alerts the driver by showing the information in the odometer/outside temperature display. If the PCM detects a small volume leak, the MIL may come on during the third drive cycle and store a DTC.