I have the familiar 3.2/2.6 known 0430 issue where the pre-cat on the near side is being declared as "a bit tired".
I have a solution which is being fitted next week at long-life, but my warning lights behaved very strangely this week.
My EML light (The one with the side veiw of an engine) is on pretty consistently nowadays and I've got used to it. It is always related to code 0430 so there's no huge concern there, but earlier this week that light went out and the service light (The one with the side veiw of the car and a spanner) came on. It wasn't flashing or anything and the car behaved as normal. I rang my friendly local independent garage, who is aware of my EML light and emmissions issue, and he said not to worry and that it was only due to the same issue that had been outstanding for so long that the car is now trying to get more serious about telling me to get the system sorted.
Fine I thought I'll just wait until next weekend, change the exhaust, move the secondary lambda sensors further back in the system and get the lights cleared / reset.
What is strange though is that driving along half an hour ago the lights have just reverted so that the spanner light has gone out and the EML (engine picture) light has come back on.
It's Sunday and I can't check the codes myself on this car (facelift 3.2) with a paperclip, so does anyone have any ideas?