Do Not Sell My Personal Information Jump to content

Bank 1 Sensor 1?


Recommended Posts

Hi guys,

need some help with my IS200. Been getting the Engine management light for the past couple of weeks.

It keep coming up with the same fault everytime i clear the fault. Bank 1 Sensor 1 fault.

I've replaced the sensor but the warning light will turn itself back on after a short while.

Just wanted to double check if i changed the right sensor.

If anybody could grab me a picture of clear cut diagram.

thanks for your help


Link to comment
Share on other sites

There are two in the engine bay, one in each manifold (one manifold is on the front 3 cylinders - bank 1, the other on the rear 3 cylinders - bank 2). You want the front one of those two, may be hidden under the heatshields on top of the manifolds (I don't have an IS so can't look). There is also one sensor under the car under the front seat area - which is not the one you are after.

Link to comment
Share on other sites

  • 2 weeks later...

im having a similar problem..i had sensor1 bank 1 and sensor 2 bank1....had it checked ,changed and within a few weeks it came back on again....same codes.because of parts warranty i had them changed again with fault codes cleared.(all done at a lexus dealership).

once cleared the light stays off for a while and eventually reappears.

everyone i speak to is confused.

im also being told that either the third sensor on the back end is going or my catalytic converters are going?? me someone please!!!

Link to comment
Share on other sites

Latest Deals

Lexus Official Store for genuine Lexus parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


Lexus Owners Club Powered by Invision Community

eBay Disclosure: As the club is an eBay Partner, the club may earn commision if you make a purchase via the clubs eBay links.

DISCLAIMER: is an independent Lexus forum for owners of Lexus vehicles. The club is not part of Lexus UK nor affiliated with or endorsed by Lexus UK in any way. The material contained in the forums is submitted by the general public and is NOT endorsed by Lexus Owners Club, ACI LTD, Lexus UK or Toyota Motor Corporation. The official Lexus website can be found at
  • Create New...