Hi, my engine fault light came on and the vehicle is spluttering a bit and running in limp mode a lot, especially on an incline. I called into motosave ( only place open) and they did a diagnostic check. Apparently the 2 main fault codes are P1339-84 (combustion of cylinder number 3 unexpected behaviour) and B1826(oil pressure warning fault) Does anybody have a clue how to fix these 2 issues, preferably using basic diy? its a 2018 peugeot 208 Ihave been looking at the engine and at the bottom of this pic is a thick black pipe just above where that joins is a thinner pipe with a connector at the end. That can be turned around through 360 degrees, is that meant to be the case or could that be part of the problem please?

