What is the 2018 honda odyssey emissions system problem?

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Mike E December 17, 2020
If You are having emission problems with the 2018 Honda Odyssey then it could be a few things. If the O2 sensor in the vehicle is damaged then the air to fuel mixture will be off, which may make it emit a gas smell. If You are getting this smell and it is not one of the sensors then You may have a damaged catalytic converter or a damaged purge valve. These can be hard to determine, but they will trigger the check engine light, so You can take the vehicle in and have it read with an OBD scanner. Lastly, make sure the gas cap is secure and that it is not cracked, as this will also cause an emissions issue.
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Brandy R. April 10, 2020
The emission system problems in a 2018 honda odyssey are usually related to the egr valve failing.
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MUDASSAR TAI September 26, 2020
I recently gotthe sign also. After research ,Changed the cabin filter and sign was gone.
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