Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
Make sure the center display is in the main screen of any function.
Press and hold the ENTER on the center switch panel for about 5
seconds. The center display shows the Compass settings main menu.
Rotate the interface dial to select the Zone Adjust, and press the interface dial to enter the selection.
NOTE: If necessary, press the BACK button to return to the previous display.
The display shows the currently selected zone number between from
1 to 15. Find the zone for your area on the zone map. If the correct
zone is not shown, turn the interface dial to cycle the zone lists up or
down.
Zone Map
Press the interface dial to decide the selected zone. Returning
to the Compass Settings main menu, press the BACK button to end the zone
selection mode.
Honda Odyssey Owners Manual > Information: Emissions Testing
Testing of Readiness Codes Your vehicle uses “readiness codes,” as part of its onboard self diagnostic system. Some states refer to these codes during testing to see if your vehicle's emissions components are working properly. The codes may not be read if you go through the testing just after th ...