cel came on, went to dealer they said it was bank1 slot2 something of that nature. then went to a friend that works in firestone. said the car has 4sensors or 3. he wasnt to sure off the top of head. so asking how many, and where r they located? how hard are they to change out? Has anyone changed them out b4 and posted it on the site? thanks in advance.

 

For a 2000 GS300, you need to picture the inline 6 engine from front (radiator side) to rear (firewall side). With this in mind, there are a total of FOUR sensors at the following locations:

CENTER: located on the exhaust manifold, for spark plug #s 1/2/3. It's also referred to as the #1 sensor.

FRONT: located on the exhaust manifold, for spark plug #s 1/2/3. It's also referred to as the #2 sensor.

EXHAUST PIPE: as it name says, it's located on the exhaust pipe.

REAR: located on the exhaust manifold, for spark plug #s 4/5/6.

All of them are four-wire sensors, with slightly different plug set-ups and varying wire lengths. Of note, there is a difference in the "exhaust pipe" and "rear" sensors for models produced up to July 99 vs. August 99 and up.

I've changed oxygen sensors on my older cars (non-Lexus), which wasn't too difficult provided you have the right tools to do the job. An oxygen sensor socket tool comes in handy. Hope this helps. Good luck!

 

http://us.lexusownersclub.com/forums...e=post&id=3122

 

My bad. This is for bank 2 sensor 2.

 

i have the 99300, is this the same set up as the 2k? do anyone know where to get the 02sensors on line, for a decent price? Looked around, and cant fine them for under 125. any help is greatly appreciated. thanks

 

Yes, same set-up for 99 vs. 2000 models. However, different sensors for the exhaust pipe and rear sensors (prod. date up to 7/99 vs 8/99 and later).

 

Thanks i really appreciate that, i have the service manual, but doest state which is which. unless i'm looking in the wrong spot. i also found the sensor for $98, plug and play(oem).

 

I'm getting a cel of p0161 - the dealer checked and said it was bank 2 sensor 1 - any idea where that is located at?