Audi Coupe Oxygen Sensor Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(10)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(10)

Oxygen Sensor Replacement Service

How much does a Oxygen Sensor Replacement cost?

On average, the cost for a Audi Coupe Oxygen Sensor Replacement is $122 with $27 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1983 Audi CoupeL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$169.41Shop/Dealer Price$200.52 - $254.46
1986 Audi CoupeL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$149.41Shop/Dealer Price$180.55 - $234.51
1982 Audi CoupeL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$149.41Shop/Dealer Price$180.55 - $234.51
1986 Audi CoupeL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$187.35Shop/Dealer Price$227.93 - $310.32
1984 Audi CoupeL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$149.41Shop/Dealer Price$180.57 - $234.56
1983 Audi CoupeL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$149.41Shop/Dealer Price$180.55 - $234.51
1987 Audi CoupeL5-2.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$274.29Shop/Dealer Price$335.16 - $478.85
1984 Audi CoupeL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$154.41Shop/Dealer Price$185.96 - $240.23
Show example Audi Coupe Oxygen Sensor Replacement prices

What is the Oxygen Sensor all about?

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor.

Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor.

If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor-MATROX-1

When replacing the oxygen sensor remember:

  • Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well.
  • New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.

How it's done:

  • Scan the computer in the car for codes.
  • Inspect for vacuum leaks and holes in the exhaust system.
  • Remove and replace the oxygen sensor if it is bad.
  • Check electrical connections.
  • Check for proper operation of oxygen sensors.
  • Clear diagnostic codes.
  • Test drive car.

Our recommendation:

Keep up with the tune-ups. If check engine light is on, don't drive the car too long without getting it inspected. If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.

What common symptoms indicate you may need to replace the Oxygen Sensor?

  • Check Engine light is on.
  • Car is getting poor gas mileage.
  • Emission test fails.

How important is replacing the oxygen sensor?

Your vehicle has multiple oxygen sensors, and they all help the car run optimally. The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Audi mechanics

Real customer reviews from Audi owners like you.

Excellent Rating

(10)

Rating Summary
10
0
0
0
0
10
0
0
0
0

Mario

15 years of experience
8 reviews
Mario
15 years of experience
Audi A4 L4-2.0L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - San Antonio, Texas
Got the job done and vehicle running great

Luis

9 years of experience
128 reviews
Luis
9 years of experience
Audi A4 Quattro L4-2.0L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - New City, New York
Luis arrived promptly at the schedule time . He was very friendly and very knowledgeable. Carried out the repair efficiently . I would highly recommend his services. You

Deane

11 years of experience
340 reviews
Deane
11 years of experience
Audi A4 L4-2.0L Turbo - Oxygen Sensor Replacement (Rear/Lower/Downstream) - Lakeside, California
Was friendly and explained everything to me. He went above and beyond to help me out and he did it in a timely manner. I would absolutely hire him again to work on my Audi.

Travis

13 years of experience
579 reviews
Travis
13 years of experience
Audi A4 Quattro L4-2.0L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream) - Farmington, Minnesota
Worked with me beforehand to make sure the service requested was applicable. Also did a great job in replacing my O2 Sensors. Would recommend Travis for sure!

Excellent Rating

(10)

Rating Summary
10
0
0
0
0
10
0
0
0
0
Number of Audi Oxygen Sensor Replacement services completed
110+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Injector Control Pressure Sensor
Common signs include starting issues, engine misfires, the Check Engine Light coming on, and a decrease in power, acceleration, and fuel economy.
How to Replace an Ambient Temperature Sensor
The ambient temperature sensor monitors the car's temperature inside and out. This sensor allows the AC to maintain comfortable cabin temperatures.
How to Replace the Oil Temperature Sensor on Most Cars
Oil, as well as the oil temperature sensor, is crucial to the engine lubrication system. A bad sensor can lead to leaks and poor vehicle performance.

Check engine light on due to O2 sensor 2011 Suzuki SX4

The code P0139 (https://www.yourmechanic.com/article/p0139-obd-ii-trouble-code-o2-sensor-circuit-slow-response-bank-1-sensor-2) is for the O2 sensor (https://www.yourmechanic.com/services/oxygen-sensor-replacement) before the catalyst. The code is for when the engine control module is testing the O2 sensor it cuts the fuel to see if the O2 sensor detects a lean...

Where is my coolant sensor

Hello, thanks for writing in about your Jeep Cherokee. The coolant temperature sensor for the gauge on your Cherokee should be on the back of the driver's side cylinder head. If you need some assistance with this, consider YourMechanic, as...

Engine not firing

Hello, thanks for writing in about your Ford F-150. You will need to scan the computer to see if there is codes for the crankshaft (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) or camshaft sensor (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement). If you'd like to have this fixed, consider YourMechanic, as...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com