Alright all.

Driving home (to Bristol) from Manchester today, my Engine light came on. No odd sensations, no power loss, etc. Pulled up at next services and checked the obvious: Oil, water, hoses, yadda yadda etc. Nothing wrong.

I fitted a Dragon tuning box last week, so figured it might be that, even though I have done about 400 miles on it with no probs so far.. Just to be safe, I disconnected both the power to it, and removed it from the Engine's ECU plug - so it could not function. Carried on with the journey, thinking that must be it, but the CEL lamp did not go away.

However, about 6 miles after I did this, the trip computer reset of its own accord?! I definately did not knock it, both hands were firmly planted at 10 & 2.

Completed my journey, with no other ill effects.

It's going in for it's bushes tomorrow, so I will get my man to stick the diagnosis tool into it, but I'm confused, and have two questions:

Anyone encountered any problems similar to this, especially with a Dragon box?

And

Should I be worried?

Cheers!

And now the CEL has gone off of its own accord!

:S