Yellow Code light of doom
I've got a 156 with the yellow code light of doom but it only comes on every now and again. Some days the car will start fine first time, other days it takes 10, 30 or even up to 45 minutes for it to go out. It happens whether I use the main key or the spare.
I've cleaned the connectors in the black box under the bonnet, but I understand that it might also have something to do with a box near the fuses behind the dash? I've been in there with a torch but don't know what I'm looking for.
I've also been told that it might mean a new ECU at £250 - is this right?
Can someone please give me an idiot's guide to fixing this problem?