Error Codes PO175

[swilliams1005]

Its says system to rich bank 2 the guy at advance said it was a oxygen sensor,can anyone tell me which one it might be. Thanks in advance.

[muddog]

well I am not sure if our situations are exactly the same, but I will tell you my expereinces. First I was getting error codes P172 and 174 I think.....not 100% what the #'s were, but is said the banks were too rich....so I decided to get a new O2 sensor, and that worked for a little bit....then the codes came back. Then I tried a new EGR valve, and that didnt do anything.....so I broke down and took it to the dealer, and all they did was reprogam the O2 sensor and update the data ranges or something like that....due to a service report. so in the long run I sent like $200 in parts and only like $150 at the dealer.....my point is it MIGHT be easier/cheaper to take it to the dealer, than trying to swap out parts......hope I helped some....good luck with your issues

[swilliams1005]

It will be going to the dealer first thing in the morning and i will mention the update on the computer thanks for the help!!

[muddog]

hopefuly it is just as simple.....let us knowhow it turns out!

[swilliams1005]

Went by the dealer this morning and all the updates were in the ecu and they assured me it was the aft(cat) passenger o2 sensor so i will be getting one soon and replacing it and they are going to reset the computer again to see if that cures the problem thanks for the help muddog!!