P1110 code

[DMILLA33]

I was throwing multiple codes for a B2 S2 O2 sensor about a month ago. I replaced it with a bosch universal O2 sensor and I'm still getting this code.

17518 Oxygen (Lambda) Sensor Heating; B2 S2; Heating Circuit; Short to Plus
P1110

I have checked the pins on the harness side of the connector and I have done a test to see if the heater is bad and I have had no luck. When I put the O2 sensor in I soldered the black and white wires to the black and white wires and then there were two gray wires for the heater and I just soldered them to the other two grays. Is it possible that there is a positive and negative gray wire for the heater and I have them mixed up?

[MacDaddy]

I had a land rover that had a CEL with new universal O2 sensors, replaced them with direct fit and the CEL went away.

[01audia4]

Just get it coded out. You can't mess up the two gray wires.

[axnjaksn]

just spend the extra money and get the plug in ones, ecs sells them for 100/each. i just did both my front o2 sensors. I would recommend replacing them in pairs or all(ie both fronts or both rears or all 4)

[DMILLA33]

Daz turned off my cats in my tune and said he would code that out but in some states if I need to go through emissions it will not pass. And so what happens when I spend another 100$ on an O2 sensor and it does the same thing


Sent from my iPhone using Tapatalk

[Tjtalan]

Daz turned off my cats in my tune and said he would code that out but in some states if I need to go through emissions it will not pass. And so what happens when I spend another 100$ on an O2 sensor and it does the same thing


Sent from my iPhone using Tapatalk

If you're worried about spending money needlessly on parts, diagnose the issue correctly. Test for continuity between pin and pin on the harness. That fault code implies there's a short, it's either in the harness or the sensor.

I will try to get you a wiring diagram.

[Tjtalan]

Sent from my iPhone using Tapatalk

[Tjtalan]

Check the voltages, if all is well replace sensor. If its not i will post the diagram.





Oxygen Sensor Signal Wire And Activation, Checking


NOTE: The oxygen sensor signal is monitored by the OBD system.


- Check DTC memory.
- If a oxygen sensor malfunction is displayed and the oxygen sensor heater is OK, disconnect harness connector for relevant oxygen sensor.


Zoom and Print Options
81_ad00a4s4cd0105_fid24-172.png



- Test voltage by connecting hand-held multimeter Fluke 83 (or equivalent) (measuring range 2 V) between sockets 3 and 4 of connector on wiring harness.
- Switch ignition on. Specified value: 450 ± 50 mV.

If the Specified value is not obtained, check oxygen sensor wiring:
Bank 1, Sensor 1.
Bank 1, Sensor 2 .
Bank 2, Sensor 1.
Bank 2, Sensor 2.

If Specified value is obtained:
- Replace relevant oxygen sensor.

Checking oxygen sensor wiring for Heated Oxygen Sensor (HO2S) -G39

- Disconnect 4-pin connector (black) for Heated Oxygen Sensor (HO2S) -G39.
- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing
- Check following wiring connections for open circuits:

Connector on VAG1598/31 test
wiring harness, box socket
socket
3 51
4 70

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
84_ad00a4s4cd0105_fid24-175a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 51

Specified value: Infinite Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinte Ohms (open circuit)

If no malfunction is identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

Checking wiring for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130

- Disconnect 4-pin connector (black) for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130.
- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing


Zoom and Print Options
87_ad00a4s4cd0105_fid24-177a.png



- Check following wiring connections for open circuits:

Connector on VAG1598/31 test
wiring harness, box socket
socket
3 68
4 69

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
89_ad00a4s4cd0105_fid24-178a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 68

Specified value: Infinte Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinte Ohms (open circuit)

If no malfunction is identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

Checking wiring for Heated Oxygen Sensor (HO2S) 2 -G108

- Disconnect 4-pin connector (black) for Heated Oxygen Sensor (HO2S) 2 -G108.
- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing
- Check following wiring connections for open circuits:


Zoom and Print Options
92_ad00a4s4cd0105_fid24-180a.png



Connector on VAG1598/31 test
wiring harness, box socket
socket
3 12
4 13

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
94_ad00a4s4cd0105_fid24-181a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 12

Specified value: Infinite Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinite Ohms (open circuit)

If no malfunction is identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

Checking wiring for Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131

- Disconnect 4-pin connector for Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131


Zoom and Print Options
97_ad00a4s4cd0105_fid24-183a.png



- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing
- Check following wiring connections for open circuits:

Connector on VAG1598/31 test
wiring harness, box socket
socket
3 10
4 11

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
99_ad00a4s4cd0105_fid24-184a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 10

Specified value: Infinte Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinte Ohms (open circuit)

If no malfunctions are identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

If no malfunction can be identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.
- Display readiness code. The readiness code must be generated if the DTC memory was erased. See: Computers and Control Systems > Monitors, Trips, Drive Cycles and Readiness Codes > Readiness Code Reading See: Computers and Control Systems > Monitors, Trips, Drive Cycles and Readiness Codes > Readiness Code, Generating

[DMILLA33]

Check the voltages, if all is well replace sensor. If its not i will post the diagram.





Oxygen Sensor Signal Wire And Activation, Checking


NOTE: The oxygen sensor signal is monitored by the OBD system.


- Check DTC memory.
- If a oxygen sensor malfunction is displayed and the oxygen sensor heater is OK, disconnect harness connector for relevant oxygen sensor.


Zoom and Print Options
81_ad00a4s4cd0105_fid24-172.png



- Test voltage by connecting hand-held multimeter Fluke 83 (or equivalent) (measuring range 2 V) between sockets 3 and 4 of connector on wiring harness.
- Switch ignition on. Specified value: 450 ± 50 mV.

If the Specified value is not obtained, check oxygen sensor wiring:
Bank 1, Sensor 1.
Bank 1, Sensor 2 .
Bank 2, Sensor 1.
Bank 2, Sensor 2.

If Specified value is obtained:
- Replace relevant oxygen sensor.

Checking oxygen sensor wiring for Heated Oxygen Sensor (HO2S) -G39

- Disconnect 4-pin connector (black) for Heated Oxygen Sensor (HO2S) -G39.
- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing
- Check following wiring connections for open circuits:

Connector on VAG1598/31 test
wiring harness, box socket
socket
3 51
4 70

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
84_ad00a4s4cd0105_fid24-175a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 51

Specified value: Infinite Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinte Ohms (open circuit)

If no malfunction is identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

Checking wiring for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130

- Disconnect 4-pin connector (black) for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130.
- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing


Zoom and Print Options
87_ad00a4s4cd0105_fid24-177a.png



- Check following wiring connections for open circuits:

Connector on VAG1598/31 test
wiring harness, box socket
socket
3 68
4 69

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
89_ad00a4s4cd0105_fid24-178a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 68

Specified value: Infinte Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinte Ohms (open circuit)

If no malfunction is identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

Checking wiring for Heated Oxygen Sensor (HO2S) 2 -G108

- Disconnect 4-pin connector (black) for Heated Oxygen Sensor (HO2S) 2 -G108.
- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing
- Check following wiring connections for open circuits:


Zoom and Print Options
92_ad00a4s4cd0105_fid24-180a.png



Connector on VAG1598/31 test
wiring harness, box socket
socket
3 12
4 13

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
94_ad00a4s4cd0105_fid24-181a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 12

Specified value: Infinite Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinite Ohms (open circuit)

If no malfunction is identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

Checking wiring for Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131

- Disconnect 4-pin connector for Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131


Zoom and Print Options
97_ad00a4s4cd0105_fid24-183a.png



- Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Connecting and Initial Checks See: Computers and Control Systems > Scan Tool Testing and Procedures > Scan Tool Testing
- Check following wiring connections for open circuits:

Connector on VAG1598/31 test
wiring harness, box socket
socket
3 10
4 11

Resistance in wiring: max. 1.5 Ohms


Zoom and Print Options
99_ad00a4s4cd0105_fid24-184a.png



- Check wiring also on 4-pin harness connector for short circuits to each other.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 10

Specified value: Infinte Ohms (open circuit)

- Check shielded wire for short circuit to sensor wiring.

Connector on VAG1598/31 test
wiring harness, box socket
socket
4 32
3 32

Specified value: Infinte Ohms (open circuit)

If no malfunctions are identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.

If no malfunction can be identified in the wiring:
- Replace Motronic Engine Control Module (ECM) -J220.
- Display readiness code. The readiness code must be generated if the DTC memory was erased. See: Computers and Control Systems > Monitors, Trips, Drive Cycles and Readiness Codes > Readiness Code Reading See: Computers and Control Systems > Monitors, Trips, Drive Cycles and Readiness Codes > Readiness Code, Generating

Thanks I will try it out!!

[HighPsi(NorCal)]

I always start with referencing this article when diagnosing o2's and it has color pictures.

http://www.vaglinks.com/Docs/Audi/Mi...esting_DIY.pdf

[DMILLA33]

I always start with referencing this article when diagnosing o2's and it has color pictures.

http://www.vaglinks.com/Docs/Audi/Mi...esting_DIY.pdf

Yes I used this to determine that the O2 heater is okay but I just can't seem to figure out the short

[landfill]

^^^This part of not spending unnecessary money is by properly diagnosing an issue
from the get go. Parts throwing should not be common practice if you want to save
time and money.