No4 glow plug which is no 4?

[lengster]

A4 2.0 tdi 2006, scan shows no4 glow plug defective,is it gearbox end or cam pulley end? Cheers

[eliot]

I think the wife's 2.0 tdi (2005) shows the same fault despite clearing.
Car starts fine - so I ignore it.

[shtu]

4 is furthest from the crank pulley end.

If one's failed, the others won't be that far behind, do the lot.