Jump to content

O2 sensor ?

Lxs &Toy ota

Recommended Posts

Hi Community, 


I own a LS430 2001. For a couple days now I do have rough idle and the VSC / Engine Warning light. After my initial analysis I found a bad ignition coil Connection. After that was fixed the car ran fine for 3000 miles. Now the same Problem came up - Rough idle and lack of power in low rpm (in kick-down it seems to be okay) . The obd2 says ist P0401. I already swapped the spark plugs and the forward O2 sensors.  But it still is Rough idling.

I 'd appreciate any suggestions before changing anymore things? I wanted to swap the rear O2 sensors already, but due to the availability of these I my question is if they are the same than the front ones or is there a difference besides the connector ? Is there a way to check them?


thanks for your help

greets from Europe 

Link to comment
Share on other sites

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.


  • Create New...