There's a problem with my car... again, any ideas as to what would be appreciated
There seem to be a few budding mechanics around here so I thought I might as well ask for some advice as I don't really know that much about cars (I just follow the Haynes manual and pray!).
After coming off the motorway from doing one of my usual 75 mile journeys this weekend, my car then decided it'd turn on the wonderful orange light of doom, I cursed at my car but still carried on driving and managed to drive all the way home with this light on. It's an odd light (engine electronics light)which simply tells you that "there is a problem somewhere", it doesn't tell you where or give any indication as to what at all. In order to find out what exactly is the problem you've got to read the code from the on board computer.
Is there any way that I can somehow make a device myself/connect it up to my laptop which I can hook up to the on board computer which will read the code and tell me what's wrong with it? I'd rather not pay £50 for a garage just to read the code only to tell me that (most likely) it is going to cost loads/is dying.
I've been trying to figure out what it is but I'm not really sure, the only symptom which the car has is that it's glugging oil a bit faster than usual, yet there are no oil leaks in sight.
A quick backstory of the car (and my dodgy repairs!). It broke down about 6-7months ago with an oil leak, a £2 gasket which caused me a nightmare. I decided to buy a Haynes manual and attempt to fix it myself because it would have cost hundreds, maybe thousands in labour costs, it took me a good 4 weekends working on it solidly - I dismantled virtually half the engine, took the exhaust off, changed the CAM belt and I was absolutely amazed when it actually started up again, let alone moved. Funnily enough, a month later it passed it's MOT without any issues... now I'm wondering if the problem I've encountered has anything to do with my hash mechanics from back then.
Edit: I mis-spelt what in the title and can't change it! /slapself