Engine management light

[Super_resin]

Hi all,
So fitted a cat back milltek exhaust today. Nothing else touched.
Started car and engine warning light is now on‍
Any suggestions or anyone else had this?
Cheers

 

[Shoonk]

On which car? Is it just a cat back?

I had it come up intermittently on my EP3 after a company fitted a custom cat back, when they cut off my cat heat shield they nicked the O2 sensor wire which caused the light to come on now and again.

Only other time was when I changed the manifold.

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[Super_resin]

Thanks.
It’s on an FN2. Just cat back, so didn’t remove under tray or go near sensors ‍

 

[Shoonk]

Suppose you will have to plug a reader in and see what pops up, EML doesn't usually come on after changing the exhaust from the cat back.

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[Super_resin]

Hi have plugged it in. The engine management show a fault, but when you go into it, it shows no fault.
Clear it and the warning symbol goes away.
Start the car and it’s back. So weird ‍

 

[Shoonk]

What reader is it? I have a cheapish ready which has been great on my EP3 but I had a Mini and it wouldn't show me nowt, may have to take it to a garage have them plug it in.

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