larryd2609

Hi, I have the following code after I reset the check engine light
'P0135 O2 Sensor Heater Circuit (that's the code from the car) > 1 fault B1-S1

I have received the sensor from the lexus dealership, but I don't know where it is located. Can someone help me with this issue.

thanks in advance
Larry

carguy07

Bank 1, Sensor 1, it's the A/F sensor on the back (firewall) side of the motor.

https://www.clublexus.com/forums/rx-...el-sensor.html

larryd2609

Okay, I probably replaced the wrong sensor because I did the one right behind the radiator on the driver side...Would this sensor be underneath the car because I can't seem to locate it....

Larry

I located it...Its on the driver side underneath the car on the manifold...I will put the one I remove back and put the new one on the one that is underneath the car, which is not working.....
Thanks for all your help...I will update u once the job is done.

Larry

larryd2609

Hi
Just want to give an update...thanks to you guys I successfully change the correct oxygen sensor, just as carguy07 said, and my codes are gone...One thing, i had to disconnect the battery for my check engine light to go out. I tried removing the fuse but that didn't work...So thanks again for all your help...

Larry