034 high flow cat trouble

[crusa]

Question for anyone out there. So I just installed an 034 high flow cat with new rear o2 sensor and am getting this code now:


Address 01: Engine

3 Faults Found:
17584 - Bank1: O2S (Lambda) Correction Behind Catalyst: Control Limit Reached
P1176 - 001 - Upper Limit Exceeded
18010 - Shareware Version. To Decode all DTCs
P1602 - 002 - Please Register/Activate - Intermittent
16523 - Shareware Version. To Decode all DTCs
P0139 - 001 - Please Register/Activate - Intermittent
Readiness: 0000 0001


any ideas what it could be?According to ross tech its * Intake Air System leaking
* Oxygen Sensor(s) and/or Oxygen Sensor Control faulty, but I was unable to find any leaks and the sensor is brand new

[A4SoftWalker]

Did u plug in the correct sensor in the front and rear?

[mnkyA4]

Isnt the first coded related more with the front O2 sensor? Also are you running the spacer for the hfc?

[crusa]

yup i rechecked and made sure they were correctly plugged in and positioned and I am running a spacer on the rear o2. The only reason I thought it might be the rear is because I never got the code till switching out the rear and the front is relatively new, less that 8,000 miles on it

[Pothole]

bump!!!!!!! but this thread seemed to fit fairly well with my problem

OK so I am also getting a P1176 CEL, P1176 - Bank1: O2 (Lambda) Correction Behind Catalyst: Control Limit Reached

about 72k- chipped to APR stage 1+ with bosh 380cc (I know there not TT225 386cc's but I haven't gotten around to replacing them)
about 81K- 034 HFC installed (got the expected rear O2 CEL, about two weeks after the HFC got re-flashed to 2+, cell gone)
today 82k- get the P1176, been driving around a lot today as Seattle is getting some good snow (28*F), and having quattro means that I get to shuttle people around

so I see that it is commonly a bad O2 sensor, however doesnt the APR 2+ code out the rear sensor?
I also heard that this code rarely is caused by a bad MAF, so I unplugged MAF and drove about 10 miles (very fun having no traction control in the snow )

before when the CEL was thrown my long term fuel trim was 13%, short term fuel trim 0%
after driving for ten miles the long term fuel trim was still very high, 14%, this leaves me to believe the MAF is fine

so, im guessing it is the injectors that is causing my car to run way to lean, also leaves me with a $300 test to see if I am right

anyone else have any thoughts into this matter

[CrazyCal]

been driving around a lot today as Seattle is getting some good snow (28*F), and having quattro means that I get to shuttle people around

Time to start charging!!! Make some money off your inconvenience!

[iamshayan]

so I unplugged MAF and drove about 10 miles (very fun having no traction control in the snow )

you know there is a button that does this too right? lol

also if you are using a J bung or an O2 spacer AND you have the code 'written out' by your software, its not actually written out- just the values it looks for are different, so spacing it can cause problems. well at least that's what my tuner told me...
just my $0.02

[Pothole]

I never put a spacer on the O2 because I knew the 2+ file would delete it, wonder if adding one in will help or make it worse


I unplugged the MAF to see if it was faulty, I didnt actually know that it played a part in the traction control until I was getting back onto the free way

[onlyaudis]

if the 02 sensor has actually gone bad, the code will still come up even if the error omit software is in place. ask me how I know.