Cheers chaps. Just had a proper scan done and it looks like the EGR valve. The mechanic checked it quickly and reset the lights and they have stayed off so far. He quoted £150 to replace with a genuine part, so I have a few Newbie questions …
Is that a good price ?
Is it a diy job I really should be doing myself ?
Will it damage anything if the light comes back on and I don't replace the valve for a few weeks ?