Posted by Lee MackintoshLee Mackintosh
on July 9, 2015, 11:28 am, in reply to "Vauxhall Zafira 1.9 2006 - DPF pressure sensor with one pipe #"
Not sure if it can cause an issue but as Chris says EGR valves can leak externally from the solenoid to egr housing gasket which will show up on a smoke test.
