Will my Engine management light go out no i've put my cat back on.

[DrR]

As above?

 

[bmh.01]

Usually but sometimes they still will want the fault code clearing to get rid.

 

[montana]

will a battery disconnect not do the trick?

 

[DrR]

I'll give it a week or so and try again.

 

[Ol’ Tarby]

Might need an RS tuner pluggin in to clear it