99 es300. 178K miles.

P1133 - Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)

P1153 - Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1)


I did some searching on here, and i didnt find any with both like this. Is the A/F sensor the o2 sensor?

Thanks!

 

Has no one had these codes at the same time?

 

Bump......

 

I personally had the P1153 pop up, and it was solved by swapping parts. The part on the car was incorrect (regular style O2 sensor). I replaced it with a wide-band O2 sensor, also known as an Air/Fuel sensor, and all was well.

When did these codes appear, and have you always owned the vehicle? Are the sensors original?

Take a look at my thread.
https://www.clublexus.com/forums/es3...r-picture.html