been throwing a code 43 CEL with a P75 ECU anyone have any ideas?

 

 

mine did that, i just changed the fuel filter and it went away.

 

i just changed my fuel filter and havent seen it yet but it does just seem to pop up out of no where usually.. i also think i may be running rich because ive been killing lots of gas it seems.. any other ideas ? thanks for your help so far

 

o2 sensor for sure, Ive had that prob before.

 

that would be a a reason to run rich and kill gas and get the code 43 CEL?

 

also try a valve adjustament that often can cause a 43.