1. Audi Q5 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:06E906265AJ（2009-2017 3.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:06E906265R（2009-2017 3.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness or poisoned sensor)
P0135: Front oxygen sensor heating malfunction (check fuse or heating element)
P0150: Rear oxygen sensor circuit failure (contamination or loose mounting)
How to remove and how to clean？
Remove Tool:22mm Oxygen sensor sleeve, PB Blaster penetrant.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust manifold heat shield and locate the front oxygen sensor (in front of the three-way catalyzer).
Spray PB Blaster to loosen threads and unscrew sensor counterclockwise.
O2 Sensor clean: Soak carbon deposits in 5-10% ferric chloride solution, clean probe with soft brush, no water washing.
Apply anti-seize lubricant when installing a new sensor and torque to 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$366.67，generic $120-$180；Original rear O2 Sensor$267.40，generic $90-$150。
labor:$$120-$200(Pre-oxygen requires removal of heat shield).

2. Audi Q3 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:06J906262M（2015-2018 2.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:1K0998262T（2015-2018 2.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust system heat shield and locate the sensor.
Unscrew the sensor after spraying penetrant and clean it as in Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$295.14，generic $120-$180；Original rear O2 Sensor$215.04，generic $90-$150。
labor:$$100-$180。

3. Audi A5 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:06E906265AJ（2009-2017 3.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:06E906265R（2009-2017 3.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust manifold heat shield and locate the sensor.
Unscrew the sensor after spraying penetrant and clean it as in Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$366.67，generic $120-$180；Original rear O2 Sensor$267.40，generic $90-$150。
labor:$$120-$200。

4. Audi Q7 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:06E906265AJ（2009-2017 3.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:06E906265R（2009-2017 3.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust system heat shield and locate the sensor.
Unscrew the sensor after spraying penetrant and clean it as in Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$366.67，generic $120-$180；Original rear O2 Sensor$267.40，generic $90-$150。
labor:$$120-$200。

5. Audi A6 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:06K906262CS（2012-2018 3.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:1K0998262T（2012-2018 3.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust manifold heat shield and locate the sensor.
Unscrew the sensor after spraying penetrant and clean it as in Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$287.38，generic $120-$180；Original rear O2 Sensor$83.40，generic $90-$150。
labor:$$120-$200。

6. Audi Q8 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:022906262CF（2020-2023 4.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:4M8906265C（2020-2023 4.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust system heat shield and locate the sensor.
Unscrew the sensor after spraying with penetrant and clean as for Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$375.10，generic $120-$180；Original rear O2 Sensor$216.58，generic $90-$150。
labor:$$150-$250(due to the complex structure of the model).

7. Audi A3 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:8S0906262B（2016-2018 2.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:06A906262BG（2016-2018 2.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove exhaust manifold heat shield and locate sensor.
Spray with penetrant and unscrew sensor, clean as for Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$267.40，generic $120-$180；Original rear O2 Sensor$99.99，generic $90-$150。
labor:$$100-$180。

8. Audi A4 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:1K0998262F（2002-2008 1.8L/3.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:06A906262BD（2002-2008 1.8L/3.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust manifold heat shield and locate the sensor.
Unscrew the sensor after spraying penetrant and clean it as in Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$337.59，generic $120-$180；Original rear O2 Sensor$83.40，generic $90-$150。
labor:$$120-$200。

9. Audi A7 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:06E906265AJ（2009-2017 3.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:06E906265R（2009-2017 3.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove exhaust manifold heat shield and locate sensor.
Spray with penetrant and unscrew sensor, clean as for Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$366.67，generic $120-$180；Original rear O2 Sensor$267.40，generic $90-$150。
labor:$$120-$200。

10. Audi A8 O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.:(Bank 1 Sensor 1）：
Original part numbers:022906262CF（2020-2023 4.0L）
OE NO.:Bosch 17028（compatible with Denso 234-9003）
Downstream(Rear) Oxygen Sensor part No.:(Bank 1 Sensor 2）：
Original part numbers:4M8906265C（2020-2023 4.0L）
OE NO.:Bosch 17029（compatible with Denso 234-9004）
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130：Front oxygen sensor circuit malfunction (frayed wiring harness)
P0135: Front oxygen sensor heating malfunction (damaged heating element)
P0150: Rear oxygen sensor circuit failure (contamination)
How to remove and how to clean？
Remove Tool:22mm Oxygen Sensor Sleeve, PB Blaster.
Remove Steps.
Disconnect the negative battery terminal and lift the vehicle.
Remove the exhaust system heat shield and locate the sensor.
Unscrew the sensor after spraying with penetrant and clean as for Q5.
Installation torque: 30-40 N・m.
How much oxygen sensor cost to replace？
Auto Parts:Original Front O2 Sensor$375.10，generic $120-$180；Original rear O2 Sensor$216.58，generic $90-$150。
labor:$$150-$250(Due to the complex structure of the model)
General Precautions
Remove Tool: Preferably use the 22mm side opening oxygen sensor sleeve to avoid damaging the wiring harness.
O2 Sensor clean:Prohibit water washing of the sensor and soak carbon deposits with a ferric chloride solution.
Installation: Apply anti-seize lubricant and torque to 30-40 N・m.
Contamination: If the sensor is damaged by oil or coolant leakage, the source of leakage needs to be repaired first.
Supplementary data notes
The above information is based on existing search resources. Detailed data for some models (e.g. Q8, A8) may be slightly adjusted due to the difference in model year, and it is recommended to verify the specific part number and scope of application through Audi's official EPC system or professional repair manuals.
Part Number Fitment:Some part numbers may be slightly adjusted due to the differences in engines model and year, it is recommended to check the specific fitment information through the VIN code.
Fault Code Diagnosis:Oxygen sensor failure may be related to the ECU software version, it is recommended to use a special diagnostic instrument for parameter calibration.
(Note: The above prices may fluctuate ±15% due to regional channel differences, real-time data suggest checking local dealers)
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