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Hello
I hope we can make this sticky.
Today I was able to bypass my downstream O2 sensor after a lot of trials and experiments. Now the downstream sensor is gone with all it's errors and the check engine light from a bad downstream sensor will never come back. And of course you will never need to change it.
There's a lot of methods on the web, but this one is what worked for me. Here's the diagram:
Just follow the diagram, be careful to cut the wires after the connector from the O2 sensor side. Here's an image for the job, I know it looks messy but I did it quickly for testing.
Make sure to isolate the 5 ohm resistor from anything as it gets very hot.
I hope we can make this sticky.
Today I was able to bypass my downstream O2 sensor after a lot of trials and experiments. Now the downstream sensor is gone with all it's errors and the check engine light from a bad downstream sensor will never come back. And of course you will never need to change it.
There's a lot of methods on the web, but this one is what worked for me. Here's the diagram:

Just follow the diagram, be careful to cut the wires after the connector from the O2 sensor side. Here's an image for the job, I know it looks messy but I did it quickly for testing.

Make sure to isolate the 5 ohm resistor from anything as it gets very hot.