[JRhaddad]

2016 420 ES AT recently installed winch after several iterations of install remove. now the engine trouble light blinks...2 slow 3 fast. What does that mean? a dealership wanted me to bring it in to look at.

 

[JRhaddad]

just read on a another thread it looks like its the O2sensor

 

[Loosemarbles]

I bought a hold over model last year. Withen the third day mine did the same thing 02 sensor. Mine was still under warranty

 

[Dexter stricklin]

9 times fast 3 times slow 9 times fast

 

[Dexter stricklin]

Need help

 

[rustynut2]

I don't see 9-3.
You can download a manual from this site, this is from the 2014, its all the same.https://www.hondaatvforums.net/threads/service-manual-downloads.50817/