1. MINI Cooper (with 3-door / 5-door / Hatch) O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for models 2014-2023)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream (Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE No.: 11787549860 (for 2014-2023 models)
OE NO.: Bosch 17187 (compatible with NTK 25648)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130: Front Oxygen Sensor Circuit Malfunction (Worn Harness or Poisoned Sensor)
P0135: Front oxygen sensor heating fault (blown fuse or damaged heating element)
P0171/P0172: Over-thinning / over-concentration of mixture (abnormal sensor signal)

How to remove and how to clean？

remove tool: 22mm oxygen sensor socket (with magnetic adsorption)
remove procedure: Disconnect the negative battery terminal and lift the vehicle to a safe height.
Remove the exhaust manifold heat shield and locate the front oxygen sensor (located in front of the three-way catalyzer).
Spray WD-40 to loosen the threads and unscrew the sensor counterclockwise.
Cleaning: Soak carbon deposits with ferric chloride solution (5-10% concentration), clean the probe with a soft bristle brush, no water washing.
Apply anti-seize lubricant during installation and tighten to 30-40 N・m torque.
How much oxygen sensor cost to replace？
Parts: stock front oxygen $180-$250, sub $120-$180; rear oxygen stock $150-$220, sub $90-$150.
Labor time: $120-$200 (front oxygen need to remove heat shield, labor time is higher).

2. MINI Countryman O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11788600992 (for models 2016-2023)
OE NO.: Bosch 17010 (compatible with Denso 234-9007)
Downstream(Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE NO.: 11788604889 (for 2016-2023 models)
OE NO.: Bosch 17029 (compatible with Denso 234-9008)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0136: Rear Oxygen Sensor Circuit Failure (Wiring Harness Deteriorated or Loose Installation)
P0140: No signal from rear oxygen sensor (ECU power supply needs to be checked)
P0153: Rear oxygen sensor response slow (clogged three-way catalytic converter)

How to remove and how to clean？

remove tool: 22mm oxygen sensor wrench (with universal joint)
remove steps: Remove the bottom shield and disconnect the sensor harness.
Use the wrench to unscrew the sensor counterclockwise (high temperature area may be sintered, need to loosen and tighten repeatedly).
Cleaning: Ultrasonic cleaner (professional repair store only), avoid washing by yourself.
Check the gasket during installation and tighten to standard torque (25-30 N・m).
How much oxygen sensor cost to replace？
Parts: stock front oxygen $220-$300, sub $150-$220; rear oxygen stock $190-$270, sub $120-$190.
Labor: $180-$250 (4WD models need to remove more guards).

3. MINI Clubman O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for models 2015-2023)
OE NO.: NTK 25198 (compatible with Bosch 17112)
Downstream (Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE NO.: 11787549860 (for 2015-2023 models)
OE NO.: NTK 25648 (Compatible with Bosch 17187)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0131: Low signal from front oxygen sensor (insufficient fuel pump pressure)
P0151: Low signal from rear oxygen sensor (exhaust leak)
P0171: mixture too lean (air flow meter malfunction)

How to remove and how to clean？
remove tool: 22mm oxygen sensor socket (short handle design)
remove Steps: Remove the lower engine guard and disconnect the sensor harness.
Use the socket to unscrew the sensor counterclockwise (pay attention to prevent heat).
Cleaning: Throttle cleaner spray, prohibit the use of acidic cleaners.
Check the harness plug during installation to avoid oxidization.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $190-$260, sub $130-$190; rear oxygen stock $160-$230, sub $100-$160.
Hours: $120-$180 (rear oxygen is deeper, higher hours).

4. MINI Convertible O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for models 2016-2023)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream (Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE No.: 11787549860 (for 2016-2023 models)
OE NO.: Bosch 17187 (compatible with NTK 25648)

Defender Oxygen Sensor Fault Codes&Symptom Signs
P0138: Front Oxygen Sensor Signal High (Injector Leak)
P0152: Rear Oxygen Sensor Signal High (Poor Sensor Grounding)
P0172: mixture too rich (fuel pressure regulator malfunction)

How to remove and how to clean？
remove tool: 22mm oxygen sensor wrench (with magnetic attachment)
remove steps: Disconnect the battery, remove the engine compartment cover and locate the front oxygen sensor (located in the exhaust manifold).
Spray penetrating oil to loosen the threads and unscrew the sensor.
Cleaning: Electronic component cleaner, ensure complete drying before installation.
Check harness plugs during installation to avoid oxidation.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $160-$230, sub $100-$160; rear oxygen stock $130-$200, sub $80-$130.
Hours: $80-$120 (compact cars have less room to maneuver, but lower hours).

5. MINI Cooper S O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for models 2014-2023)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream (Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE No.: 11787549860 (for 2014-2023 models)
OE NO.: Bosch 17187 (compatible with NTK 25648)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0133: Slow response from front oxygen sensor (poor fuel quality)
P0155: Rear oxygen sensor heating fault (blown fuse)
P0171: mixture too lean (clogged air filter)

How to remove and how to clean？
remove Tool: 22mm Oxygen Sensor Sleeve (with Extension Rod)
remove Steps: Lift the vehicle, remove the bottom shield and locate the rear oxygen sensor (located behind the three-way catalytic converter).
Disconnect the wiring harness and use the socket to unscrew the sensor counterclockwise.
Cleaning: Specialized carbon cleaner, avoid contact with chemical solvents.
When installing, make sure the sensor probe is oriented correctly to avoid interference with the exhaust pipe.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $200-$280, sub $140-$200; rear oxygen stock $170-$250, sub $110-$170.
Hours: $150-$220 (front oxygen is deeper, higher hours).

6. MINI JCW（John Cooper Works） O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for models 2018-2023)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream (Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE NO.: 11787549860 (for 2018-2023 models)
OE NO.: Bosch 17187 (compatible with NTK 25648)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0134: No signal from front oxygen sensor (sensor power supply failure)
P0151: low signal from rear oxygen sensor (sensor grounding fault)
P0172: mixture too rich (fuel pump malfunction)

How to remove and how to clean？
remove Tool: 22mm Oxygen Sensor Sleeve (with universal joint)
remove steps: Remove the chassis shield and locate the front oxygen sensor (located in the exhaust manifold).
Disconnect the wiring harness and use a wrench to unscrew the sensor (high temperature areas may be burnt, need to loosen and tighten repeatedly).
Cleaning: soft cloth dipped in alcohol wipe, prohibit water washing.
Apply anti-seize lubricant during installation and tighten to standard torque (25-30 N・m).

How much oxygen sensor cost to replace？
Parts: stock front oxygen $230-$310, sub $160-$230; rear oxygen stock $200-$280, sub $130-$200.
Hours: $150-$220 (hardcore off-road models have limited room to maneuver).

7. MINI Paceman O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11788600992 (for 2013-2016 models)
OE NO.: Bosch 17010 (compatible with Denso 234-9007)
Downstream(Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE No.: 11788604889 (for 2013-2016 models)
OE NO.: Bosch 17029 (compatible with Denso 234-9008)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0136: Rear Oxygen Sensor Circuit Failure (Worn Wiring Harness)
P0140: No signal from rear oxygen sensor (ECU power supply needs to be checked)
P0153: Slow response from rear oxygen sensor (clogged three-way catalytic converter)

How to remove and how to clean？
remove tool: 22mm oxygen sensor wrench (with ratchet function)
remove Steps: Lift the vehicle, remove the bottom guard, and disconnect the sensor harness.
Use the wrench to unscrew the sensor counterclockwise (pay attention to heat-resistant gloves).
Cleaning: Alcohol wipe the probe, avoid high temperature baking.
Check threads for damage during installation and replace sealing washers if necessary.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $250-$330, sub $180-$250; rear oxygen stock $220-$300, sub $150-$220.
Labor time: $200-$300 (more parts need to be disassembled, higher labor time).

8. MINI Coupe O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for 2011-2016 models)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream(Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE No.: 11787549860 (for 2011-2016 models)
OE NO.: Bosch 17187 (compatible with NTK 25648)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0132: Front oxygen sensor signal high (injector leak)
P0152: Rear Oxygen Sensor Signal High (Poor Sensor Grounding)
P0172: mixture too rich (fuel pressure regulator malfunction)

How to remove and how to clean？
remove tool: 22mm oxygen sensor wrench (with magnetic adsorption)
remove steps: Remove the lower engine guard and disconnect the sensor harness.
Use the wrench to unscrew the sensor counterclockwise (pay attention to prevent heat).
Cleaning: Throttle cleaner spray, acidic cleaners are prohibited.
Check for loose wiring harness plugs during installation and replace if necessary.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $190-$260, sub $130-$190; rear oxygen stock $160-$230, sub $100-$160.
Hours: $120-$180 (rear oxygen is deeper, higher hours).

9. MINI Clubvan O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for models 2012-2024)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream(Rear) Oxygen Sensor part No. (Bank 1 Sensor 2)
OE No.: 11787549860 (for 2012-2024 models)
OE NO.: Bosch 17187 (Compatible with NTK 25648)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0130: Front Oxygen Sensor Circuit Malfunction (Worn Wiring Harness)
P0135: Front oxygen sensor heating malfunction (blown fuse)
P0171: mixture too lean (faulty air flow meter)

How to remove and how to clean？
Remove Tool: 22mm Oxygen Sensor Sleeve (Short Handle Design)
Remove Procedure: Remove bottom shield and disconnect sensor harness.
Use a wrench to unscrew the sensor counterclockwise.
Cleaning: Electronic component cleaner, ensure complete drying.
Check sealing gaskets during installation and replace if necessary.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $160-$230, sub $100-$160; rear oxygen stock $130-$200, sub $80-$130.
Hours: $90-$140 (compact cars are easy to operate).

10. MINI Roadster O2 sensor

Original part numbers and OE NO.
Upstream(Front)Oxygen Sensor part No.（Bank 1 Sensor 1）：
OE NO.: 11787548961 (for 2012-2016 models)
OE NO.: Bosch 17112 (compatible with NTK 25198)
Downstream(Rear) Oxygen Sensor part No. (Bank 1 Sensor 2):
OE No.: 11787549860 (for 2012-2016 models)
OE NO.: Bosch 17187 (Compatible with NTK 25648)
​​​
Defender Oxygen Sensor Fault Codes&Symptom Signs
P0138: Front Oxygen Sensor Signal High (Injector Leak)
P0152: Rear Oxygen Sensor Signal High (Poor Sensor Grounding)
P0172: mixture too rich (fuel pressure regulator malfunction)

How to remove and how to clean？
Remove Tool: 22mm Oxygen Sensor Wrench (with magnetic attachment)
Remove Procedure: Disconnect the battery, remove the engine compartment cover and locate the front oxygen sensor (located in the exhaust manifold).
Spray penetrating oil to loosen the threads and unscrew the sensor.
Cleaning: Electronic component cleaner, ensure complete drying before installation.
Check harness plugs during installation to avoid oxidation.

How much oxygen sensor cost to replace？
Parts: stock front oxygen $160-$230, sub $100-$160; rear oxygen stock $130-$200, sub $80-$130.
Hours: $80-$120 (compact cars have less room to maneuver, but lower hours).
Supplementary data notes
Part number adaptability: Some part numbers may be slightly adjusted due to differences in engine models and years, it is recommended to check the specific adaptability 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 and channel differences, real-time data suggest checking local dealers)
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