Need help removing the heated oxygen sensor cable fitting.

[Houdoxi71]

Soak the 02 where it meets the pipe with penetrating oil for a few days, a squirt or two each day. See if that helps, but it only helps over time, not overnight. I have used a plumbers style pencil flame torch (not map gas, just regular) to heat up the actual "nut" of a O2 sensor after soaking it for a few days. I heated it up until I thought it was too much (it won't glow red on regular propane gas no matter how long you hold the flame), then throw a socket/crow foot on it and give it hell. It works, but, as soon as the metal cools it stops turning. Because propane isn't as hot, this usually results in about 1/6th of a turn at a time, then I hit the still warm area with more penetrating oil, and heat it again repeating the procedure until it starts to turn out.

Do you have side airbags in the seat? If you do, and they were simply disconnected when the key was turned back on, plugging it back in then disconnecting the car battery for a few hours *might* clear the code.

Update: I read your other post, something was damaged when the carpet and seats came out. If you do have the side/seat airbag hosing it down wasn't good for it.