Doesn’t sound like it.
Wish the ground was drier to get under the car. I don’t remember if I managed to break that sensor loose when i was doing exhaust, I’m afraid i didn’t. That makes throwing an anti fouler or two on that o2 much tougher.
I looked through the easy stuff for SAI (secondary air injection) and it seems good at a glance. Next steps on trying to make that work would be to test the solenoid that lets air into the head in the exhaust chambers, and test the vacuum bits that drive it. They all click or run as applicable but vacuum could be missing there or the solenoid could be bad.
I don’t have a mighty vac to actuate the solenoid.
Wish I remembered where my service manual CD was, so I could dig out a CD drive and check full vac diagrams and diag procedures.
Lot of effort for a stupid sticker. Wasted 2-3 hours trying to get the cat monitor to set and it won’t. 100% fail rate. Even at cruise with way higher cat temps. min tempt to test is 440 C and that’s where it is in a lot test cycle. on the highway at 53mph is 600 +/-20. Driving that slow is annoying but max rpm to test is 2200.