Throwing 02 error codes - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

bowser22 · 03-03-2010, 12:32

03 P71 with 150k k/m. It runs great but gives the error codes p0153 and p2197, I read up and checked for intake leaks. I noticed my airbox bolts that fasten the air box down have become rusted and broke off at some point in the cars life, so the airbox is moving around a little in there. Do you guys think this could be the cause of it?
Thanks!

jsuthers · 03-03-2010, 12:48

im not 100% sure but when I first got mine (before I got the K&N) all but 1 of the bolts were broken off.... which made it very easy to take off btw :) but It wasnt throwing a code of any sort...

since its the 02 codes im sure its something funky with the O2 sensors...

im sure bert will be able to elaborate on this

**Bert** · 03-03-2010, 14:30

Has the PCV been replaced lately? The hoses to it sometimes leak. I would start by replacing the left side O2 sensor, if there are no vacuum leaks

bowser22 · 03-03-2010, 17:16

Ok, I have an obd reader for my laptop, is it possible I could tell if theres any vac leaks from using that? I read soemthing about vac pressure and it was like 39 psi.

**Bert** · 03-03-2010, 17:40

You'd need a vacuum gauge to test the vacuum. It would be in the area of 20" at idle.

bowser22 · 03-04-2010, 10:54

I just bought a new oxygen sensor, figured replacing it wouldnt be a loss anyways. Bank 2 Sensor 1, that should be front drivers side sensor, is there any differance between the 4 sensors or are they all the same?
Thanks!

**Bert** · 03-04-2010, 11:58

The front 2 have the same connector. The sensors themselves are the same on all vehicles, just the connectors are different.

bowser22 · 03-04-2010, 13:41

So I ordered a delphi 15717, will that fit the front and I have a p71.
Thanks!