I have two problems to fix. The immediate one is pass the emissions test in the next two weks, then repair the torque converter (the two pesky o-rings).

My codes:

My MIL was on, and I my vag com scan showed:

VIN: WA1YD64B74N013322

Address 01: Engine Labels: 078-907-551-AZA.lbl
Part No: 4Z7 907 551 S
Component: 2.7L V6/5VT G 0010
Coding: 07755
Shop #: WSC 02325
VCID: 53AB78A9A1798480CCE
WA1YD64B74N013322 AUZ7Z0C2415712

2 Faults Found:
18032 - MIL Request Signal Active (Check TCM for errors too!) P1624 - 35-00 -
16805 - Warm Up Catalyst; Bank 1 P0421 - 35-00 - Efficiency Below Threshold
Readiness: 0000 0000

Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 4Z7 927 156 M
Component: AG5 01V 2.7l5VT USA 2122
Coding: 01002
Shop #: WSC 02325
VCID: 50A177A5906FFF98F1C

1 Fault Found:
17125 - Torque Converter Clutch P0741 - 35-00 - Stuck OFF / No Power being transferred

The 16805 is a code I have yet to see on this car.

I’m not very good at understanding some of the posts (and the vag-com readings are also difficult for me to understand), but I believe one post said to run a test, on the O2 sensors from a cold engine.

I think the following is the information the post was recommending, but don’t know how to read it.

Mode 9 : Calibration Identification

Type 04 - Calibration ID : 4Z7907551S 0010 (Address 10)
Type 04 - Calibration ID : 4Z7927156M 2122 (Address 1A)
Type 06 - Please wait, this could take a while...

Scan to try to understand which o2 sensor to change:

Monday,14,January,2013,18:02:09
VCDS Release 11.11.5 (x64): Generic OBD2
Mode 1:Read Data

20:Bank 1 Sensor 1 Status 0.135 V 0.00 %()
21:Bank 1 Sensor 2 Status 0.285 V
24:Bank 2 Sensor 1 Status 0.110 V 0.00 %()
25:Bank 2 Sensor 2 Status 0.635 V

--------------------------------------------------------------------------------

Monday,14,January,2013,18:03:09
VCDS Release 11.11.5 (x64): Generic OBD2
Mode 1:Read Data

20:Bank 1 Sensor 1 Status 0.205 V 2.34 %(rich)
21:Bank 1 Sensor 2 Status 0.100 V
24:Bank 2 Sensor 1 Status 0.710 V -2.34 %(lean)
25:Bank 2 Sensor 2 Status 0.260 V

--------------------------------------------------------------------------------

Mode 01 - PID 01 : Readiness -- Address 10

Number of DTCs stored: 0 -- MIL Status: MIL OFF
Misfire monitoring: Passed
Fuel System: Passed
Comprehensive Components: Passed
Catalyst monitoring: Failed or Incomplete
Heated catalyst monitoring: Not installed.
Evaporative system monitoring: Failed or Incomplete
Secondary air system monitoring: Passed
A/C system refrigerant monitoring: Not installed.
Oxygen sensor monitoring: Failed or Incomplete
Oxygen sensor heater monitoring: Failed or Incomplete
Exhaust Gas Recirculation: Not installed.

--------------------------------------------------------------------------------

Mode 01 - PID 01 : Readiness -- Address 10

Number of DTCs stored: 0 -- MIL Status: MIL OFF
Misfire monitoring: Passed
Fuel System: Passed
Comprehensive Components: Passed
Catalyst monitoring: Failed or Incomplete
Heated catalyst monitoring: Not installed.
Evaporative system monitoring: Failed or Incomplete
Secondary air system monitoring: Passed
A/C system refrigerant monitoring: Not installed.
Oxygen sensor monitoring: Failed or Incomplete
Oxygen sensor heater monitoring: Failed or Incomplete
Exhaust Gas Recirculation: Not installed.

--------------------------------------------------------------------------------

Mode 01 - PID 01 : Readiness -- Address 10

Number of DTCs stored: 0 -- MIL Status: MIL OFF
Misfire monitoring: Passed
Fuel System: Passed
Comprehensive Components: Passed
Catalyst monitoring: Failed or Incomplete
Heated catalyst monitoring: Not installed.
Evaporative system monitoring: Failed or Incomplete
Secondary air system monitoring: Passed
A/C system refrigerant monitoring: Not installed.
Oxygen sensor monitoring: Failed or Incomplete
Oxygen sensor heater monitoring: Failed or Incomplete
Exhaust Gas Recirculation: Not installed.

--------------------------------------------------------------------------------

Mode 01 - PID 01 : Readiness -- Address 10

Number of DTCs stored: 0 -- MIL Status: MIL OFF
Misfire monitoring: Passed
Fuel System: Passed
Comprehensive Components: Passed
Catalyst monitoring: Failed or Incomplete
Heated catalyst monitoring: Not installed.
Evaporative system monitoring: Failed or Incomplete
Secondary air system monitoring: Passed
A/C system refrigerant monitoring: Not installed.
Oxygen sensor monitoring: Failed or Incomplete
Oxygen sensor heater monitoring: Failed or Incomplete
Exhaust Gas Recirculation: Not installed.

--------------------------------------------------------------------------------

TID 01 - Rich to lean sensor threshold voltage Test:0.435 V
TID 02 - Lean to rich sensor threshold voltage Test:0.435 V
TID 03 - Low sensor voltage for switch time calculation N/A
TID 04 - High sensor voltage for switch time calculation N/A
TID 05 - Rich to lean sensor switch time N/A
TID 06 - Lean to rich sensor switch time N/A
TID 07 - Minimum sensor voltage for test cycle Test:0.195 V - Min:0.000 V - Max:0.385 V
TID 08 - Maximum sensor voltage for test cycle Test:0.675 V - Min:0.480 V - Max:1.005 V
TID 09 - Time between sensor transitions Test:0.000 s - Min:0.080 s - Max:1.160 s
TID 10 - Sensor period N/A

--------------------------------------------------------------------------------

TID 01 - Rich to lean sensor threshold voltage Test:0.435 V
TID 02 - Lean to rich sensor threshold voltage Test:0.435 V
TID 03 - Low sensor voltage for switch time calculation N/A
TID 04 - High sensor voltage for switch time calculation N/A
TID 05 - Rich to lean sensor switch time N/A
TID 06 - Lean to rich sensor switch time N/A
TID 07 - Minimum sensor voltage for test cycle Test:0.195 V - Min:0.000 V - Max:0.385 V
TID 08 - Maximum sensor voltage for test cycle Test:0.675 V - Min:0.480 V - Max:1.005 V
TID 09 - Time between sensor transitions Test:0.000 s - Min:0.080 s - Max:1.160 s
TID 10 - Sensor period N/A

--------------------------------------------------------------------------------

Mode 07: Pending emission related fault codes

Address 10 (Engine): No fault code found.

--------------------------------------------------------------------------------

Mode 9 : Calibration Identification

Type 04 - Calibration ID : 4Z7907551S 0010 (Address 10)
Type 04 - Calibration ID : 4Z7927156M 2122 (Address 1A)
Type 06 - Please wait, this could take a while...

I will appreciate any input from other members. I cleared the codes, but the 18032 kept coming back. Just drove the car a few miles, and noticed there is much more power today, than yesterday.

my question is do I have enough information on which o2 sensor to replace? Or what should I do now?