Error P1121

[Ayz]

pls help my is300 started showing the check engine light then entered limp mode,after scanning it showed error code 1128 i then replaced the throttle control motor erased the error code and it was okay for 15 minutes.but after that it went into limp mode again showing error code 1121 am really frustrated and need urgent help please

[Steve]

That may be the MAF sensor... i will take a look for you and get back

[Steve]

Check this post out.. i was right

http://www.lexusowne...showtopic=35733

I have had this myself.. easy fix if you clean the sensor right.

Between the Air Intake and the engine is a senssor. Take it apart and you will see a thin wire in a plastic casing. This gets dirty and needs an alcohol clean.. link to maplins is on the link i sent you above.

Its a 15 min job and cheap.. but just be careful not to damage that sensor wire.