My GTA passed MOT no problems earlier today. I picked it up and on the way home got the dreaded "Motor control systems failure....go to dealer".
I have had it flash on before on starting (say 5 times in 3 years), but it has always gone straight off. This time it stayed on. I tried turning off ignition and starting again but light still there. I inspected battery and the "magic eye" is black, which suggests battery is f**ked. However it starts first time.
Any ideas anyone?
Ta