Any updates Paul?
Im having same issue on my 2000 Lexus RX300 v6 where I got a P1150 code for the upstream o2 A/F sensor.
I broke it loose but then it doesnt want to turn anymore. I cant get it to budge any further.
Im going to get some bolt buster too and rock it back n forth. maybe try some heat.
This sucks man. Ive already had to replace the entire CAT and center exhaust muffler due to the o2 sensor port threads breaking off, now its the threads seized on the upstream o2.
$300 in 2 Denso o2 sensors has turned into over $1000 dollars now due to rusted and various critical threads that are just rusted and siezed to death.
