We have a 2016 Honda FIT LX and recently have had issues.
She has 119k miles and is primarily used for highway mileage to/from NYC.
Recently the engine light came on, and the code is P0420.
Research indicates it could be the CAT, but there was also a Honda Bulletin that showed there were faulty fuel injectors that caused the code to pop.
Our mechanic did test the fuel injectors and they didn't show an issue.
There is no power or mileage(epa) lost, still a peppy car.
We heard if you run a few cans of Sea Foam in the gas tank, it should help with the injectors and clean out the CAT.
Has anyone had experience, either good or bad, with this?
Also, does this seem normal that the CAT would go around 100k?
As a side bar, the rear struts are also leaking. When it rains!
Thank you in advance.