Skyline OBD2 system readiness incomplete

Hey! I have a Skyline too. I had something similar happen after I cleared some codes with an OBD reader. I think it's like the car needs to re-learn all the emissions stuff. Did you try driving it for a while after the readout?

Interesting! How long is 'a while'? I've driven maybe 50 km since the OBD2 readout. Is there a specific type of driving that helps, like highway vs. city, or does it just need mileage?

Yeah, 50km probably isn't enough. Think of it like warming up an old engine – it needs time to cycle through everything. For me, it eventually cleared itself after a week of normal driving. If it doesn't clear after a couple of weeks, maybe visit a workshop.

Thanks a bunch for the info! Turns out you were spot on. After another week, the system readiness cleared itself. The vehicle inspection passed, and no repair costs were incurred. Much appreciated!