My 2002 Honda Odyssey Emission and TCS light turned on today. After restarting the engine the TCS light did not remain on, however, the emission light did remain on. Why?
Those lights is just a kid in class waving her hand trying to get you attention because she has the answer. You need to have the codes read. Some places will read them for FREE. Try Autozone or Advanced Auto Parts. Get the exact code not just their translation into English and post it back here. It likely will have a format like P1234.
The emissions light will probably not be related to the TCS light. TCS is traction control. That comes on if there’s a traction problem or an ABS problem affecting the traction system. It also may come on after any severe brake usage causes the brakes to warm up. Traction systems rely on the brakes to keep the wheels from spinning. But they can’t overheat the brakes because then you won’t have adequate braking performance when you need it.
Go to a Honda shop and have the codes pulled from the computers. I don’t thinik that the auto shops’ code machines will be able to pull these for you.
Thanks for your input. The solution was an EGR valve that was covered by warranty and the code was P1491.