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Air Fuel Sensor


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Hi everybody. long time reader first time post.

I have a RX300 2001 with 56k miles for just over a year now. A gem up until recently when she let me down with the air/flow sensor failing.

So i did research on the interweb (including this site) and realised there are 4 sensors two O2 and two air fuel. Rather than messing around with ohm reading etc.

i popped down to my local Lexus dealer who told me P1135 i.e heating element for Bank One Sensor One has failed. i found on the interweb a very handy diagram showing the B1 S1 location.

It is behind the engine against the firewall. I decided to stick with Lexus OEM parts as that seems to be the general consensus. I live in Ireland and asked my friendly local dealer how much for the part ..... €580 + vat = €700.... (no wonder they're so friendly)

Anyway i checked up north and Lexus Belfast have air flow sensors for £180 which i would like to get my hands on. .....Now for the bit i need help with

Does anybody know the Lexus part number for the Bank 1 Sensor 1 Air Flow sensor? i've seached the internet to no avail and have become confused with spurious part numbers etc.

Many thanks in Advance...

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Does anybody know the Lexus part number for the Bank 1 Sensor 1 Air Flow sensor? i've seached the internet to no avail and have become confused with spurious part numbers etc.

Try this site, very handy for finding part numbers.

I don't know the RX300, but it looks to me like this diagram shows the sensors, they're labelled as "Sensor, Air Fuel Ratio", and it looks like the same part (89467-48011) is used in two different places. As I say though, I don't know the RX300 so please don't just take my word for it ! The price is showing as around 200 Euros, so it does sound like it might be that £180 part.

A Lexus/Toyota spare parts guy should be able to tell you the part number anyway (they look on a system with these same diagrams).

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