Elm light! Decat!

[TommySage]

Hi guys
I fitted a item decat over a month ago and only last weekend the dash lit up saying check emissions and the engine warning light is obv on because! How can I reset and get rid of it? Is it a Renault job?
Shame my brothers focusnst dream science wont fit in the socket

Thanks
Tom

 

[henderson]

i've got a decat and touch wood i've not had this problem,wonder if u may have an issue with the pre cat,any decent garage will be able to look what fault code is coming up matey,no need for renault to have yr eyes out