Query over garage diagnosis for dash lights

Quick question - I started a thread a while ago about an ABS/ESP light coming on, and the ABS pump was diagnosed.

The day before I took it to the garage for this to be looked at what is commonly known as the 'engine management light' also came on.

Now the garage have checked this over and said this is linked to the ABS issue and not something separate.   But Skoda refers to this as the exhaust system light.

So could an issue with the ABS cause this light to come on as well?  Or not?  

It isn't flashing, and there was no change in engine performance, still the same as ever...just three amber steady lights... ABS, ESP and the little engine image.