Just wanted to update the forum,
I received my new to me o2 sensor last Thursday. I got a chance to install it this morning. I spent 5 minutes putting the sensor in and 4hours on google trying to find a way to turn the light off without the factory scan tool. I tried ALL of the tricks. None worked! I jumped the plug and verified that I was still only seeing the original p0134 code which I was. I don’t know why I tried this but it works. At least it did for me on this cforce 400. With the key and ignition slider switch ON, but engine off, let the light flash continuously without the jumper wire in the plug. It won’t be reading the code, just flashing that there is a fault. While this is happening, I disconnected the battery. Once I put the cables back on the light was gone. It still does the check out on startup but doesn’t flash an error anymore. Hope this helps someone else too.