There are only two O2 sensors on your vehicle. The one before the catalytic converter is bank 1 sensor 1 (also known as upstream). The one after the catalytic converter is Bank 1 Sensor 2 (also known as downstream).
You will need to jack up the car and safely support it in order to crawl under the vehicle to access the downstream O2 sensor. Unplug the connector and use a 7/8" wrench to remove the O2 sensor from the exhaust pipe. Install the new O2 sensor, tighten until snug, and plug in the connector.
I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa
jeremy,, Is it really that simple??/ What do you sugest to use that will help with a stuck or stingy sensor I.E. the nut,, and is there anything about the plug that should be inspected as well as maybe the use of dialithic grease or even a need for it??? curious i need to do the exact same thing and am almost dreading it lol..
It should really be that easy. If the nut is stuck or stiff crack it loose and soak it in break fluid. Give it about 20 minutes. Tighten it back up and loosen again. Resoak if still stuck.
Working it back and forth should help loosen it up.
on another note will i have to drop the exhaust pipes at all to access the units easier?? or will there be enough space??? I have big hands lol
thanks alot,, Have heard horror stories from co-workers trying to do it themselves, Either using WD/40 or other combustible loosener, then not cleaning it correctly and POOF spot fire lol... Or breaking it off completly inside the threads.. Love the breakfluid method.. Sounds safer, I never thought of it as a lube. thanks again.... John.
Downstream there's plent of room. Upstream could be a challenge depending on what motor you have.
3.1ltr v-6
the upstream on that one will be on the back exhaust manifold. It can be a little tricky but it can be removed from the top of the car. If this has the two dog bone mounts on the top of the engine/upper radiator support than remove those first and you will be able to rock the engine forward (with the transmission in neutral) a little to give you some more room to work.
will try this!! ... thanks very much jeremy W. hope to be able to hit you up for knowledge later if i need it lol... Again thanks JOHN
I have recently found it to be a glogging cat convertor,, Do you think i could drill a couple holes into it to atleast get me to and from work till i can afford a full repair??? In a cpl weeks?? I know it will be louder and sure i'll get an idiot light, But hey i got that already lol...but will any other damage acure??
Sorry John, I can not give any advice on tampering with a federal emissions system. Drilling holes will not help and if you do you are obligated to no longer drive the vehicle on road.
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Thanks alot,, Have heard horror stories from co-workers trying to do it themselves, Either using WD/40 or other combustible loosener, then not cleaning it correctly and POOF spot fire lol... Or breaking it off completly inside the threads.. Love the breakfluid method.. Sounds safer, I never thought of it as a lube. thanks again.... John.
SOURCE: Code p0141 02 Sensor Heater Circuit Malfunct Bank #1 Sensor2
after the catalytic converter on the driver side in the exhaust pipe.
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