91' Ls400 Engine Check Light -25 - Air-fuel Ratio Lean Malfunction

[Mr Marks]

i checked the codes on the engine light and it came down the number,,25 - Air-fuel ratio lean malfunction-- and i don't know what will cause this problem i would appreciate if some one knew about this code thanks tom

[Mr Marks]

well i really need help on this issue this my first ls400 shes at 310 Kilometers i know-High K's- and ill tell you what i love the car i just now got use to mines , i switched to fully sytenic it runs find i read the the topic on the oil change, my Q here is about this check engine light i took her to a Lexus dealer and they wanted big money just to look at it -so i thought i might ask you guys if u ever known about this, my ls400 is running lean i check the back exhaust and only the right side one is wet like water i dunno if this haves some do to with it running lean am just now getting ready to put some parts together i don't know where to start

[python]

02 sensor......change both of ur main 02 sensors with denso oem ones do not use bosch

[Mr Marks]

02 sensor......change both of ur main 02 sensors with denso oem ones do not use bosch

thanks for the repsone i will replaces these asap

[jcrome04]

If that doesn't help get the injectors pulled and cleaned.

I did that on my old Lexus when it threw the same code, and it fixed it right up.