O2 sensor or wiring?

q76767 · Oct 13, 2024

I have a 12 Jetta 2.0 SOHC and I'm getting some o2 sensor codes no activity and resistance to high. How would I test the wiring to the o2 sensor to confirm it isn't a wiring issue before I put a new sensor in? I checked the fuses already and the o2 sensor is a 4 wire sensor.

Code:

Sunday,13,October,2024,12:54:16:58701
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 24.7.0.0 (x64)  HEX-V2 CB: 0.4643.4
Data version: 20240715 DS356.3
www.Ross-Tech.com


VIN: 3VW2K7AJ4CM311089   License Plate:


Chassis Type: AJ-VW36 (6N0)
Scan: 01 02 03 08 09 15 17 19 25 56

VIN: 3VW2K7AJ4CM311089   Mileage: 244790km-152105miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
56-Radio -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CBP)       Labels: 06G-906-055-CBP.clb
   Part No SW: 06G 906 055 AE    HW: 06G 906 055 B
   Component: 2.0l 85 KW      G01 1302 
   Revision: T5H06---    Serial number:               
   Coding: 0001015
   Shop #: WSC 57883 001 1048576
   VCID: 6C81CDFEBA85A3BA93B-8038
   VINID: 0E69C26C745A113743041008241720A809

3 Faults Found:
050210 - Implausible Data Received from Body Control Module (Central Electric)
               U0422 - 000 -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 2
                    Reset counter: 255
                    Mileage: 244798 km
                    Time Indication: 0
                    Date: 2019.03.06.
                    Time: 03:20:37

             Freeze Frame:
                    RPM: 833 /min
                    Load: 26.7 %
                    Speed: 0.0 km/h
                    Temperature: 51.0°C
                    Temperature: 25.0°C
                    Absolute Pres.: 1010.0 mbar
                    Voltage: 14.224 V

000320 - Oxygen (Lambda) Sensor B1 S2
               P0140 - 000 - No Activity
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 244798 km
                    Time Indication: 0
                    Date: 2019.03.06.
                    Time: 21:30:37

             Freeze Frame:
                    RPM: 762 /min
                    Load: 22.7 %
                    Speed: 0.0 km/h
                    Temperature: 92.0°C
                    Temperature: 57.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

004372 - Oxygen (Lambda) Sensor; B1 S2
               P1114 - 000 - Internal Resistance too High
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 244798 km
                    Time Indication: 0
                    Date: 2019.03.06.
                    Time: 21:30:37

             Freeze Frame:
                    RPM: 770 /min
                    Load: 22.7 %
                    Speed: 0.0 km/h
                    Temperature: 92.0°C
                    Temperature: 57.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

Readiness: 0110 0101

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09G-927-750.clb
   Part No SW: 09G 927 750 LE    HW: 09G 927 750 LE
   Component: AQ 250 6F           2618 
   Revision: 00H97000    Serial number:               
   Coding: 0000840
   Shop #: WSC 43988 001 1048576
   VCID: 7F5B0AB2DBF32822269-802A

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BJ    HW: 1K0 907 379 BJ
   Component: ESP MK60EC1   H31 0121 
   Revision: 00H31001   
   Coding: B14B240C512308FB8D0B24EC8A221061A70000
   Shop #: WSC 00066 000 00000
   VCID: 7BA3FEA2C3EB34020A1-802E

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 5C0-820-047.clb
   Part No SW: 5C0 820 047 AM    HW: 5C0 820 047 AM
   Component: J301  Klimaanlage   0203 
   Revision: 2001010S    Serial number: 00000000487300
   Shop #: WSC 00066 000 00000
   VCID: 6B83CEE2BF8BA4829A1-803E

1 Fault Found:
00898 - Control Circuit A/C compressor
            007 - Short to Ground - Intermittent
             Freeze Frame:
                    Fault Status: 00110111
                    Fault Priority: 2
                    Fault Frequency: 2
                    Reset counter: 118
                    Mileage: 244798 km
                    Time Indication: 0
                    Date: 2019.03.06.
                    Time: 00:04:44


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 6R0-937-08x-09.clb
   Part No SW: 5C0 937 087 E    HW: 5C0 937 087 A
   Component: BCM25 JLB H3  H66 0251 
   Revision: B2066001    Serial number: 04371208110261
   Coding: 7B994B1808AB0B0000302000240884D40042502E60000000300000000000
   Shop #: WSC 00066 123 12345
   VCID: 2F3B1AF2471318A2F69-807A

   Subsystem 1 - Part No SW: 6R0 959 801 M    HW: 6R0 959 801 M  Labels: 6R0-959-801.CLB
   Component: J386__TSG_FT  002 3464
   Serial number: --------------------
   Coding: 820000

   Subsystem 2 - Part No SW: 6R0 959 802 P    HW: 6R0 959 802 P  Labels: 6R0-959-802.CLB
   Component: J387__TSG_BT  002 3464
   Serial number: --------------------
   Coding: 820000

   Subsystem 3 - Part No SW: 6R0 959 811 D    HW: 6R0 959 811 D
   Component: J388__TSG_HL  002 3464
   Serial number: --------------------
   Coding: 800000

   Subsystem 4 - Part No SW: 6R0 959 812 D    HW: 6R0 959 812 D
   Component: J389__TSG_HR  002 3464
   Serial number: --------------------
   Coding: 800000

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5C0 959 655 E    HW: 5C0 959 655 E
   Component: AirbagVW10G   013 0807 
   Serial number: 003GTM00S7YA   Dataset Number: 160003v____ 0154
   Coding: 00003936
   Shop #: WSC 00066 000 00000
   ASAM Dataset: EV_AirbaVW10SMEVW360 A01020
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 3431159EAEB53B7A8BB-8060

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 5C6 959 339     HW: 5C6 959 339
   Component: BF-Gewichtss.  H10 0027
   Serial number: 6940000Y1100005YBC0V
   Coding: 303148

   Crash sensor for side airbag: driver side:
   Subsystem 2 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Fahr.V  H01 ----
   Serial number: 3572MSME08341660ZZZL

   Front Passenger's Side Airbag Crash Sensor:
   Subsystem 3 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Beif.V  H01 ----
   Serial number: 3582MSME0A590560ZZZT

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 4 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Fahr.H  H02 ----
   Serial number: 3516KSME73632711ZZZJ

   Passenger side rear thorax airbag crash sensor:
   Subsystem 5 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Beif.H  H02 ----
   Serial number: 3526KSME44462411ZZZG

   Crash sensor for front airbag: driver side:
   Subsystem 6 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Fahr  H02 ----
   Serial number: 3556LSME02001B12ZZZB

   Crash sensor for front airbag: front passenger side:
   Subsystem 7 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Beif  H02 ----
   Serial number: 3566LSME29031B12ZZZO

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 5C6 920 951     HW: 5C6 920 951
   Component: KOMBI         H04 0604 
   Serial number: 00000000000000
   Coding: 270201
   Shop #: WSC 00066 000 00123
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04114
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 6889B1EEA2FD8F9AF73-803C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
   Part No SW: 6N0 909 901     HW: 5C0 937 087 A
   Component: GW-K-CAN TP20 H66 0251 
   Revision: B2066001   
   Coding: 102200
   Shop #: WSC 00066 123 12345
   VCID: 70B9D98E9AAD475AAF3-8024

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H04 0604 
   Serial number:               
   Coding: 000000
   Shop #: WSC 00066 000 00199
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03009
   ROD: EV_Immo_UDS_VDD_RM09_VW23.rod
   VCID: 6A8DCBE6BCF1BD8AE17-803E

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
   Part No SW: 1K0 035 164 D    HW: 1K0 035 164 D
   Component: LOW NAR       H02 0004 
   Revision: -----03S    Serial number: VWZ4Z6L3163870
   Coding: 05000400010006
   Shop #: WSC 00066 000 00000
   VCID: 2313E6C21BDBACC2621-8076

No fault code found.

End----------(Elapsed Time: 01:01, VBatt start/end: 13.8V/13.9V)-----------

Dr Sheldon · Oct 13, 2024

000320 - Oxygen (Lambda) Sensor B1 S2
P0140 - 000 - No Activity

004372 - Oxygen (Lambda) Sensor; B1 S2
P1114 - 000 - Internal Resistance too High

Quite clear those fault codes !!

This is referring to S2 - So the one after the catalyst.

I would guess that if the ECU can see "deep" enough into that sensor to establish "Internal Resistance" and to an extent "No Activity" then very unlikely to be a wiring or any other type of fault.

Try this

Unplug the sensor > Leave it unplugged > Clear all Codes > Run the Engine > Check for new Codes !

Would it not be magical if you then got an "Open Circuit" fault code ? For sure "Internal Resistance" and "No Activity" should be long gone ??

davisev5225 · Oct 13, 2024

At that mileage, it's highly likely your O2 sensor is cooked. They usually only last ~50k miles (~80k km) before dying the slow death.

q76767 · Oct 13, 2024

davisev5225 said:
At that mileage, it's highly likely your O2 sensor is cooked. They usually only last ~50k miles (~80k km) before dying the slow dedeath.i

I ordered a new bosch give it a try tomororw

q76767 · Oct 14, 2024

Dr Sheldon said:
Quite clear those fault codes !!

This is referring to S2 - So the one after the catalyst.

I would guess that if the ECU can see "deep" enough into that sensor to establish "Internal Resistance" and to an extent "No Activity" then very unlikely to be a wiring or any other type of fault.

Try this

Unplug the sensor > Leave it unplugged > Clear all Codes > Run the Engine > Check for new Codes !

Would it not be magical if you then got an "Open Circuit" fault code ? For sure "Internal Resistance" and "No Activity" should be long gone ??

I just put a new bosch one in and I'm still getting code p1114 internal resistance to high

q76767 · Oct 14, 2024

q76767 said:
I just put a new bosch one in and I'm still getting code p1114 internal resistance to high

Also after driving I get p0140 no activity Intermittent

q76767 · Oct 14, 2024

After new bosch sensor and driving 25 miles.

Code:

Monday,14,October,2024,13:47:19:58701
VCDS Version: Release 24.7.0 (x64) Running on Windows 11 x64
www.Ross-Tech.com

                Address 01: Engine       Labels: 06G-906-055-CBP.clb
Control Module Part Number: 06G 906 055 AE    HW: 06G 906 055 B
  Component and/or Version: 2.0l 85 KW      G01 1302
           Software Coding: 0001015
            Work Shop Code: WSC 57883 001 1048576
                      VCID: 6C81CDFEBA85A3BA93B-8038
3 Faults Found:

050210 - Implausible Data Received from Body Control Module (Central Electric)
               U0422 - 000 -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 3
                    Reset counter: 255
                    Mileage: 244798 km
                    Time Indication: 0
                    Date: 2063.14.31
                    Time: 20:57:22

             Freeze Frame:
                    RPM: 795 /min
                    Load: 21.6 %
                    Speed: 0.0 km/h
                    Temperature: 93.0°C
                    Temperature: 59.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

000320 - Oxygen (Lambda) Sensor B1 S2
               P0140 - 000 - No Activity - MIL ON
             Freeze Frame:
                    Fault Status: 11100000
                    Fault Priority: 0
                    Fault Frequency: 3
                    Reset counter: 255
                    Mileage: 244799 km
                    Time Indication: 0
                    Date: 2063.14.31
                    Time: 20:58:35

             Freeze Frame:
                    RPM: 1554 /min
                    Load: 56.1 %
                    Speed: 71.0 km/h
                    Temperature: 93.0°C
                    Temperature: 50.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

004372 - Oxygen (Lambda) Sensor; B1 S2
               P1114 - 000 - Internal Resistance too High
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 244837 km
                    Time Indication: 0
                    Date: 2063.14.31
                    Time: 22:07:42

             Freeze Frame:
                    RPM: 786 /min
                    Load: 26.3 %
                    Speed: 0.0 km/h
                    Temperature: 84.0°C
                    Temperature: 50.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V


Readiness: 0000 0101

Dr Sheldon · Oct 14, 2024

Dr Sheldon said:
Try this

Unplug the sensor > Leave it unplugged > Clear all Codes > Run the Engine > Check for new Codes !

Would it not be magical if you then got an "Open Circuit" fault code ? For sure "Internal Resistance" and "No Activity" should be long gone ??

q76767 · Oct 14, 2024

I just did that and your correct it does get an open circuit code. So that means the new bosch sensor is no good? The new sensor has 10.7 ohms between pin 1 and 2 and the voltage on pin 1 car side harness is 12.78v which goes to one of the white heater wires

davisev5225 · Oct 14, 2024

q76767 said:
I just did that and your correct it does get an open circuit code. So that means the new bosch sensor is no good?

Where'd you source it from? Lots of parts that say "Bosch" are actually counterfeit. The resistance you measured is within spec, but that's not necessarily conclusive...

Also, time to do continuity checks from the sensor connector back to the ECU harness. If they all test good, do it a second time while wiggling the harness in various points all the way through its run. You might have a pinched or broken wire somewhere.

q76767 · Oct 14, 2024

davisev5225 said:
Where'd you source it from? Lots of parts that say "Bosch" are actually counterfeit. The resistance you measured is within spec, but that's not necessarily conclusive...

Also, time to do continuity checks from the sensor connector back to the ECU harness. If they all test good, do it a second time while wiggling the harness in various points all the way through its run. You might have a pinched or broken wire somewhere.

It came from ecs so I'd assume it'd be a genuine bosch. Should I try getting another one. Would you know which wires I'd test for continuity?

davisev5225 · Oct 14, 2024

q76767 said:
It came from ecs so I'd assume it'd be a genuine bosch. Should I try getting another one. Would you know which wires I'd test for continuity?

ECS isn't the best option, FCP Euro or Europa Parts are much better. That said, don't get another one yet, focus on testing the wiring as previously mentioned. You need to test all (4) wires while the ignition is off (having 12V on it while trying to continuity test can cause issues depending on how your meter is constructed). If you don't know where they go, then getting the wiring diagram <--- clickable link will help.

Dr Sheldon · Oct 14, 2024

davisev5225 said:
ECS isn't the best option, FCP Euro or Europa Parts are much better.

Clearly not !!

Even if the Sensor came from the Mistress of the Chairman and CEO of VAG - It is faulty !!!

Wind it in @davisev5225

Dr Sheldon · Oct 14, 2024

q76767 said:
I just did that and your correct it does get an open circuit code. So that means the new bosch sensor is no good? The new sensor has 10.7 ohms between pin 1 and 2 and the voltage on pin 1 car side harness is 12.78v which goes to one of the white heater wires

Get a genuine Sensor - Period

Dr Sheldon · Oct 14, 2024

davisev5225 said:
The resistance you measured is within spec,

With or without current flow, at what temp ??

Offering False Hope ?

davisev5225 · Oct 14, 2024

Dr Sheldon said:
Clearly not !!

Even if the Sensor came from the Mistress of the Chairman and CEO of VAG - It is faulty !!!

Not necessarily, but we won't know until the wiring has been tested.

Dr Sheldon said:
With or without current flow, at what temp ??

Offering False Hope ?

Not false hope at all, working through the diagnostic process. It was a "safe" option to load the parts cannon in this case since O2 sensors like to fail at higher mileages, but since the same errors continue after replacing it, it's time to do the harder work. ECS probably provided a genuine sensor, but I can't guarantee that fact. Better to eliminate the other variables before loading the parts cannon a second time.

Dr Sheldon · Oct 14, 2024

q76767 said:
I just did that and your correct it does get an open circuit code. So that means the new bosch sensor is no good? The new sensor has 10.7 ohms between pin 1 and 2 and the voltage on pin 1 car side harness is 12.78v which goes to one of the white heater wires

The writing is on the wall ??

q76767 · Oct 14, 2024

Dr Sheldon said:
Get a genuine Sensor -

Would this one work since says oe and bosch or order from fcp?

https://imgur.com/a/raWARCu

davisev5225 · Oct 14, 2024

@q76767 Test your wiring before you buy more O2 sensors.

Dr Sheldon · Oct 15, 2024

q76767 said:
I just did that and your correct it does get an open circuit code.

Can you copy and paste that code please ?

I would have expected 2 codes at least ?

O2 sensor or wiring?

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