Hi new to the site I'm after a bit of help, message came on display (engine system falt)and red light to the right of it, no power loss, no eml pulled over turned engine off then back on message gone :) few days latter same again, turned off and on message gone :) lasted a few more days , same again took it to a mate who has a snap on diagnostic falts came up were glow plug relay and cam sensor cleared falts took it for a drive came back plug it back in and glow plug relay came back, since then I've been told the snap on kit doesn't pic up specific falts and glow plug relay is a common random diagnostic!!!! Any advice on what it could be?

Thanks colin

Somr diagnostic kits dont pick up all the faults its a general area so faulty glow plugs or wiring faulty relay charging fault are the most common

depends which scanner your using but the solus ultra is excellent on fords.

glow plug relay is normally glow plug fault or wiring to them.

but plugs are easy to test with a resistence check so that would be my first port of call