There are two very, very different versions of that car.
Pre-Facelift, these are riddled with faults, honestly I owned a pre-facelift Accord CDTi and it was easily the worst car I ever owned for letting me down. Electrical problems (the cars electrics are actually sound, it’s people hacking it to bits to try to fix some of the other faults that break them) exhaust manifolds crack sending fumes into the cabin, the top spec versions come with an touchscreen sat-nav system that shits it’s DVD drive so you can’t use it – the same screen runs the radio and climate systems too. Headlamps fill with water, MOT fail, electric boot (estate) breaks all the time, causing mostly electrical faults when people try to fix it – there’s others too, shame really because when it works, it’s a lovely old bus, they’re huge – much bigger than Mondeos and Vectras, when they were new they would have been lovely.
The post-facelift version is a lot better, but still not perfect – some common faults that are more than just common, they’re just faults.
Post-facelift Petrol Saloons are probably as close to being fault free.
I think the facelift came about 2005 so the one you’re looking at is on the cusp.