Can a diagnostic code on a Lexus is250 randomly go off?

LinkBack Thread Tools Display Modes
Old 13 Dec 2013, 01:10 pm   #1 (permalink)
Junior Member
  • Join Date: Sep 2013
  • Posts: 2
  • User Status: Offline

Default Can a diagnostic code on a Lexus is250 randomly go off?

I had a code to get a tune up as cylinders were misfiring. But suddenly the other day, the code disappeared. Do they disappear on their own or is the car okay? I know I need a tune up soon regardless but it don't understand what happened! Any help? Thanks
  Reply With Quote
Old 13 Dec 2013, 01:25 pm   #2 (permalink)
  • Join Date: Nov 2010
  • Posts: 44
  • User Status: Offline


often a fault is generated when 'ecu' sees a probelm eg misfire. if misfire goes..( it happens) fault is no longer 'current status' and so light is turned off. it will stay logged in memory banks for a technician to check out later thoug
  Reply With Quote
Old 13 Dec 2013, 01:39 pm   #3 (permalink)
Junior Member
  • Join Date: Apr 2010
  • Posts: 18
  • User Status: Offline


Diagnostic readout will be able to determine if that fault still exist, and how long it had been there.

It is in the memory of the ECU.

You will need this scantool in order to delete the fault from its memory.

Some faults are transcient and are not permanent. The current value is slightly out of tolerance.

Good luck.
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 05:39 pm.

Powered by Yahoo Answers is an unofficial community for car enthusiasts. is not affiliated with Toyota Motor Corporation in any way.
Toyota Motor Corporation does not sponsor, support, or endorse in any way.
Copyright/trademark/sales mark infringements are not intended or implied.