[peters911s]

Any ideas on the best way to proceed?

Already replaced O2 Sensor 1 and 3 (Pre and Post Catalyst)

Here is the VCDS scan

Thanks in advance

Saturday,07,January,2023,16:13:35:13401
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.10.0.1 (x64) HEX-V2 CB: 0.4623.4
Data version: 20221026 DS344.0
www.Ross-Tech.com


VIN: 3VWPG3AGXAM024549 License Plate: WINNIE
Mileage: 128650km-79939mi Repair Order:



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Chassis Type: AG (AG - VW New Beetle NAR (2010))
Scan: 01 02 03 08 15 17 19 25 29 35 37 39 46 54 56 65 75

VIN: 3VWPG3AGXAM024549 Mileage: 128650km-79939miles
-------------------------------------------------------------------------------
Address 01: Engine (BPR) Labels: 06A-906-032-BGP.lbl
Part No SW: 07K 906 032 CM HW: 07K 906 032 AA
Component: NB R5 AT G 4585
Revision: 1SH04--- Serial number: VWX5Z0J2267047
Coding: 0000003
Shop #: WSC 00066 000 00000
VCID: 76B5EAA6F4C4782BC1E-8022
VINID: 0E69E05C3457A117400841442487F8A25E

3 Faults Found:
008342 - Post-Catalyst Oxygen (Lambda) Sensor Correction; Bank 1
P2096 - 002 - Too Lean - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 6
Reset counter: 255
Mileage: 128468 km
Time Indication: 0

Freeze Frame:
RPM: 1844 /min
Load: 35.7 %
Speed: 13.0 km/h
Temperature: 77.0°C
Temperature: 11.0°C
Absolute Pres.: 990.0 mbar
Voltage: 14.224 V

004470 - Bank1: O2 (Lambda) Correction Behind Catalyst
P1176 - 001 - Control Limit Reached
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 0
Reset counter: 255
Mileage: 0 km
Time Indication: 0

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: -40.0°C
Temperature: -40.0°C
Absolute Pres.: 0.0 mbar
Voltage: 0.000 V

008598 - Oxygen (Lambda) Sensor B1 S1
P2196 - 002 - Signal too High (Rich) - MIL ON
Freeze Frame:
Fault Status: 11100010
Fault Priority: 0
Fault Frequency: 7
Reset counter: 255
Mileage: 128486 km
Time Indication: 0

Freeze Frame:
RPM: 1089 /min
Load: 23.5 %
Speed: 21.0 km/h
Temperature: 78.0°C
Temperature: 27.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.843 V

Readiness: 0000 1000

 

[peters911s]

I have not done a hard reset, used Bosch O2 Sensor and unfortunately, I reset the MIL recently but after a decent drive this morning and measuring block 032, this is what I got...

Sunday,08,January,2023,11:40:30:13401
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.10.0.1 (x64) HEX-V2 CB: 0.4623.4
Data version: 20221026 DS344.0
www.Ross-Tech.com


VIN: License Plate: WINNIE MAF2


Address 01: Engine (07K 906 032 CM)

11:40:19 Group 032
0.4 % Lambda (Idle) Self-Adaptation
5.5 % Lambda (Partial) Self-Adaptation

 

[peters911s]

The long term fuel trim unfortunately was zeroed out when I reset the MIL and the later one i posted was after a few miles driving. They seem to be within spec so I'm going to wait till the check engine light comes back on again and then run another scan to see where we are at.

 

[peters911s]

OK.....Check Engine light came back on again and I ran another scan and these are the value that I got for group 01, 032 and 033.

VIN: License Plate: WINNIE 01/24
Mileage: 128770km-80013mi Repair Order:

Address 01: Engine (07K 906 032 CM)
18:20:02 Group 001
640 /min Engine Speed
96.0°C Coolant Temperature
0.8 % Lambda Controller
00111111 Basic Setting Requirements

18:20:02 Group 032
0.4 % Lambda (Idle) Self-Adaptation
0.8 % Lambda (Partial) Self-Adaptation

18:20:02 Group 033
0.8 % Bank 1 Lambda Control
1.640 V Bank 1 Voltage of Oxygen Sensors

and the relevant codes that caused the new MIL
2 Faults Found:
008342 - Post-Catalyst Oxygen (Lambda) Sensor Correction; Bank 1
P2096 - 002 - Too Lean - Intermittent - MIL ON
004470 - Bank1: O2 (Lambda) Correction Behind Catalyst
P1176 - 001 - Control Limit Reached - Intermittent
Readiness: 0010 1000

 

[peters911s]

I replaced both up stream and down stream sensors recently when light first came on with bosch and Denso units so chances are an

 

[peters911s]

Could a MAF going bad be the cause? Fuel trims seem to be within spec based on tonight's scan but something is spiking enough times to trigger the MIL

 

[peters911s]

Thank you for the info...I'll check the measurements soon...replaced front with bosch and rear with Denson when the MIL first came on. Didn't change the 3rd sensor thats on the BPR engine (anyone know what number that one is...no. 3? Or even what it measures?)

 

[peters911s]

3rd sensor thats right in the middle of the cat If I recall correctly...

 

[peters911s]

Yep...3 sensors per the BPR 2.5 5CYL

 

[peters911s]

Pre cat and post cat sensors were both replaced...the post with a denso and the pre with a bosch...