am_ver

My check engine light came on - downloaded the error code and got this fault. Anyone know whats going on? Do I need to fix anything?



Monday,27,December,2010,16:16:37:42594
VCDS Version: Release 10.6.3

Address 01: Engine Labels: 06E-910-559-BKH.lbl
Control Module Part Number: 4F2 910 559 B HW: 4F1 907 559 A
Component and/or Version: 3.2l V6 FSI 0030
Software Coding: 01050109190F0120
Work Shop Code: WSC 26153 444 84168
VCID: 2B5E09E1F383
1 Fault Found:

001072 - Catalyst System; Bank 2: Efficiency Below Threshold
P0430 - 006 - Short to Plus - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100001
Fault Priority: 5
Fault Frequency: 3
Reset counter: 40
Mileage: 113518 km
Time Indication: 0
Date: 2010.12.23
Time: 10:40:10

Freeze Frame:
RPM: 2368 /min
Mass Air / Rev.: 381.5 mg/str
Temperature: 90.0°C
Part Throttle
Temperature: 792.0°C
Speed: 117.0 km/h

Nedrager

Possible Causes:
Oxygen Sensor(s) Bank 2 faulty
Oxygen Sensor(s) Control Bank 2 faulty
Catalyst Bank 2 faulty

Possible Solutions:
Check Oxygen Sensor(s) Bank 2
Check Oxygen Sensor(s) Control Bank 2
Perform Oxygen Sensor(s) Bank 2 Aging Check
Check Catalyst Bank 2
Set Readiness
Replace Catalyst Bank 2

http://wiki.ross-tech.com/wiki/index...4/P0430/001072

You could have a bad O2 sensor or a bad catalytic converter... or wiring or something else...

am_ver

thanks. hmmm... I did reset the light yesterday using the VAG-COM - so do you think the MIL light will come on again if this is a real issue? I guess I am looking for insight on how I should tackle this beast - just wait for something to fail and wait for the system to give me exactly what has failed (& replace it then), or should I get something fixed before it causes more damage.

Advise?!

jetsfan101

it said intermittent so maybe its just something that came up and MIGHT not come back...if it comes back its an issue which you will need to address

Nedrager

O2 sensor could be on it's way out... has your gas mileage started to slip, not running quite as smooth as it used to?

or the Cat... does it smell like rotten eggs when the cars running?

am_ver

Gas mileage is still as it used to be. There appears to be a lot of the O2 sensors - front, back, rear left and rear right. How do we determine which one is failing at this point?


No smell either.

Nedrager

Judging from your fault it seems to be one of the after cat sensors. The cars fuel trim is controled by the before cat sensors so that's why you haven't noticed any difference. I'm a bit more **** with my repairs. I would order and replace them all as a system if one failed. You should be able to see the control signal values with the VAGCOM while the car is running, that should help lead you to which one is failing.

am_ver

is the after cat sensor same as after Oxygen sensor? Does it mean my front oxygen sensor is failing? sorry, my basics are not very clear on this subject.

Nedrager

No. No. and Yes, your basics are not clear. It means one of your oxygen sensors after the cats was causing your fault.

am_ver

ok, the same error came back when I ran an auto scan. But this time, no MIL -


1 Fault Found:
001072 - Catalyst System; Bank 2: Efficiency Below Threshold
P0430 - 006 - Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00000001
Fault Priority: 5
Fault Frequency: 4
Reset counter: 29
Mileage: 116550 km
Time Indication: 0
Date: 2011.02.09
Time: 20:08:22

Freeze Frame:
RPM: 2208 /min
Mass Air / Rev.: 337.9 mg/str
Temperature: 91.5°C
Part Throttle
Temperature: 760.0°C
Speed: 108.0 km/h

Readiness: 0000 0000

Bank 2 sounds like the driver side o2 sensor. Now, I need to figure out if it is the pre or post cat. oh and btw - the cat converter was replaced at 49k miles.

Can anyone tell me what do I need within VAG to figure out which one is failing? (where do I go to see the control signal values with the VAGCOM while the car is running)?