Is it still possible to buy a code reader for the g40 i have been trying to track dow an intermitent problem for some time now with no succes
http://www.polog40.co.uk/forum/index.php/topic,214.0.html
don't bother with any of the simple code readers you can get, if you can find one that actually works with a g40 (which is unlikely I think) then it'll be fairly useless anyway. VAGCOM/VWTOOL, reading sensor values and some common sense is the best method.
Only one i know of is a local mates made by Ross-Tech & cost £180 secondhand.
Its the official Vag reader.
He only has limited connectors at mo though till we source some more.
Fred.