Hi all,
Ever since owning my 350Z (3 years now) I've had the EML come on intermittently, say once every 3-6 months, always with the same codes;
P1146
P1147
P1166
P1167
These all point to O2 sensors from what I can find but I'm not sure which ones as the 350Z has 2 on each bank.
The car itself has some engine mods - Popcharger, Plenum spacer, Berk HFCs, Nismo S-tune exhaust and UpRev. It's a 2004 with 110k miles (had 80k when I bought it). Has failed MOT on emissions a couple times - assumed this was because of HFCs but now not so sure.
Is this normal behaviour for a 350Z with HFC and other engine mods? Or should I look to be replacing the O2 sensors, and if so which ones??
Thanks in advance for any help and advice
Matty