How to turn off Odyessy check engine light?
First have the car connected to a code scanner, most parts
stores will do it for free. When the check engine light illuminates
it is letting you know there is a problem, the problem will need to
be repaired before the light will go out permanently. The same code
scanner can then clear the codes and shut off the light. Many
people will say disconnect the battery for a minute or so but if
your problem still exists the light will come back on.