Hi,
There are a total of three sensors on this vehicle. If the sensors are under the hood and near where the exhaust manifold and downpipe attach, those two will be upstream. There is a third one further back on the exhaust.
I attached two pics below. In the first one, I highlighted the catalytic converter as well as the sensors. In pic 2 I identified the three as front, middle, and rear. That is how they are identified. The front and middle are upstream.
I hope this helps. Let me know if you have other questions.
Take care,
joe
See pics below.
Images (Click to make bigger)
Thursday, December 8th, 2022 AT 7:51 PM