01 MAX Monitors HELP!

[louied9]

hello fellow nico guru's//
I have a 01 max SE ready to get PA inspection and the o2 monitor and catalyst monitor will not reset.. i have installed the o2 sims on the secondary o2 sensors with no change..


I was trying to avoid replacing the o2 all together , but will the primary o2 (3 wire) i believe called precat, the ones in the exhaust mans cause this o2 monitor to not set?

i have read through the FSM but nothing grabs me to look at. let me say the car runs great, replaced the MAF and plugs. car has about 95k ..

I read about going to the dealer to have the ECU flashed for updates.. does anyone think this will make a difference , or can the consult"II tell me exactly what is buggin out?

i need to get this fixed yesterday,.,

I am a seasoned auto guy, with years of mechanical and 12v experience..

thanks for ur help..
Louied

[NutriaforBreakfast]

The ECU is going to compare the readings between the front o2 sensors and the final
rear 02 sensor. If there is a substantial variance the CEL will be triggered.
Generally I think the o2 sensors will last about 100K miles. I tried to ride a while with
old ones but the CEL kept coming on and it just wore me down. I noticed
www.rockauto.com has some good prices on Bosch o2 sensors.

[louied9]

Thanks, I must note , I only coded once p0171, outside of that no codes , that's why I'm at a loss to determine what is causing the readiness monitors to set on the o2, the o2 heaters monitor check ok....?