Morning you handsome bunch! So I’ve been away just over 1k miles started the old girl up 2017 early plate t32 high line abs the engine light stayed on just yellow! Plugged in Carista and it’s came up saying cylinder one open. So my plan is to check the relay and fuses under the battery and go from there. Anything I should look for? Change the relay is going to be the 1st thing. she’s still running fine not hard to start etc and just under 80k so if it’s the glow plug which is number one glow plug and it’s location? Thanks in advance