Check Engine Code P0175

[C W 2]

What is the probable cause and most likely fix for OBD-II check engine light code P0175 - System to Rich (Bank 2)?



This is on a 2004 ST.

 

[Tom Schindler]

Possible bad O2 sensorcreporting rich condition.



It could be a multitude of things though.





Tom

 

[C W 2]

I read the information in the FAQ section under causes and diagnostic aides. Any idea where I can get more complete information on the diagnostic aides? I guess I can go down the list and check each one out as best I can to get started.