can i do a fault check with the engine running.

[BFMurphy]

can i do a fault code check just after drving, without switching the engine off and still running?

 

[hmmm]

Why would you want to do i whilst the engine is running?
I dont think you can do it that way anyway, it's best to follow procedure mentioned in the Problem Solving section.

http://forum.gtiroc.com/phpbb2/viewtopic.php?t=10984