gpow

Helo, I have my gs 300 1998 year and my 3 o2 sensors are not workig.
I was looking on ebay, there is ifferent types of o2 sensors. I o not quite know are all these three sensors are the same or they are different,
For example there is one on ebay:
http://www.ebay.com/itm/New-4Wire-O2-Oxygen-Sensor-Fits-Toyota-Camry-Tundra-Lexus-GS300-ES300-8946506100-/300937816534?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ALexus&hash=item46114aa9d6&vxp=mtr
Other is:
http://www.ebay.com/itm/084-O2-OXYGEN-SENSOR-BOSCH-4W-1992-2005-LEXUS-SC400-LX470-2004-2006-SCION-XA-XB-/121006113515?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ALexus&hash=item1c2c86c2eb&vxp=mtr
Or just all sensors are the same it is just they look different?
Thanks!

Mr Jokster

iTrader: (8)

Those are different because they're for different cars

MasterKwan

What makes you think they're not working? 02 sensors are the most "replaced by mistake" parts on a car. People get an 02 code and just replace them, when the problem might just be a vacuum leak.

iToaster

The sensors are different, but only in the length of the wires that come off of them. Tell us what the codes are and we can help you find the ones you need.

I don't know what codes OP's getting, but it's probably because these cars eat 02 sensors left and right. Every one of my 02 sensors had gone bad when I bought the car and the codes were for the sensor circuits, not a lean condition. Replacing them fixed the problem.

gpow

Error codes:
P0135
P0141
P0155

MasterKwan

P0135 - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
P0411 - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
P0155 - Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1

What's the chance that all 3 heaters failed at once?

I'd probably measure the resistance of the heaters before I spent $300+ dollars on parts.

iToaster

Resistance should be between 11 and 16 ohms, but the circuit will probably be open on the failed sensors. The logic used to trip the codes does so for each sensor individually, so it is implied that they failed around the same time.

gpow

So any ideas where I can buy all these 3 right sensors? I am away from USA, but some sellers on ebay can send these sensors to me.
Only thing I need is the correct sensors.

gpow

As i read on https://www.clublexus.com/forums/es3...-upstream.html
The most important are these two sensors : Bank 1 Sensor 1 and Bank 1 Sensor 2 because they are before the cat converter and engines computer uses that info to determine the air/fuel ratio.
So are these two o2 sensors identical?
For example if i Will buy these two upstream sensors, will it help?
http://www.ebay.com/itm/New-4Wire-O2-Oxygen-Sensor-Fits-Toyota-Camry-Tundra-Lexus-GS300-ES300-8946506100-/251332854747?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ALexus&hash=item3a849b03db&vxp=mtr

MasterKwan

I'd just go to rockauto.com and look them up there. Even if the sensors are correct, the wire lengths might be different. You probably want something that actually fits.

Bank 1 sensor 1 and Bank 2 senor 1 are the 2 important ones. Even with a bad heater, the car will still run properly. It just takes longer for the 02 sensors to get to operating temperature.

GS4_Fiend

iTrader: (22)

go with aftermarket denso. it works well and it's plug and play..

gpow

as I can see on rockauto.com they all look the same.
I think I will buy that http://www.ebay.com/itm/New-4Wire-O2-Oxygen-Sensor-Fits-Toyota-Camry-Tundra-Lexus-GS300-ES300-8946506100-/251332854747?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ALexus&hash=item3a849b03db&vxp=mtrHope it will work for both
Bank 1 Sensor 1 and
Bank 1 Sensor 2

rafizgora

try scottykilmer.com to solve this problem