Audi 80 Quattro 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 Estimate for Audi 80 Quattro

Audi 80 Quattro Oxygen Sensor Replacement costs $225 on average.

CarServiceEstimateShop/Dealer Price
1992 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$264.29Shop/Dealer Price$332.37 - $481.47
1990 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$254.29Shop/Dealer Price$319.60 - $466.62
1988 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$448.85Shop/Dealer Price$562.80 - $855.74
1992 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$448.85Shop/Dealer Price$562.76 - $855.67
1990 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$448.85Shop/Dealer Price$562.82 - $855.79
1991 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$254.29Shop/Dealer Price$319.60 - $466.62
1991 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$453.85Shop/Dealer Price$567.56 - $860.32
1988 Audi 80 QuattroL5-2.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$259.29Shop/Dealer Price$325.01 - $472.34
Show example Audi 80 Quattro Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service

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

Michael

16 years of experience
606 reviews
Michael
16 years of experience
Audi A3 L4-2.0L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - Atlanta, Georgia
Micheal was on time, professional, knowledgeable, and fast.

Shawn

12 years of experience
223 reviews
Shawn
12 years of experience
Audi A4 Quattro L4-2.0L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - Exton, Pennsylvania
This is a great service. Shawn was prompt and completed the work needed. i would definitely use this service again.

Kyle

12 years of experience
137 reviews
Kyle
12 years of experience
Audi A5 Quattro L4-2.0L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - Willingboro, New Jersey
Kyle was courteous,professional and knowledgeable. I will request him again

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

How to Replace a Cylinder Head Coolant Temperature Sensor
Signs of coolant temperature sensor failures include sluggish acceleration, hard starting, and a Check Engine or Service Engine Soon Light.
How Long Does a Speedometer Sensor Last?
While While a mechanical speedometer will use a speedometer cable attached to the driveshaft and transmission, that’s not the case with an electronic speedometer, such as is used in most modern vehicles. These use a speedometer sensor. It’s mounted to...
What Happens to Sensors if They are Dirty?
Car sensors can get dirty with normal use. Symptoms of dirty sensors include reduced engine power, worse gas mileage, or an engine that hesitates.

Car won't start after replacing starter and battery

Hello. There could be several possibilities for why your car isn't starting after replacing your battery and starter. The timing belt could be broken, you could have no spark going to your spark plugs, or your fuel pump might not...

Check Engine Light O2 sensor slow

Hello. The computer reset only puts the computer in a position that it will control the fuel as if you just bought the car. As the vehicle is driven and a defective O2 sensor gives a bad input to the...

Engine mifiring at higher RPMs, tachometer spiking up

Try to replace the ignition module and coil which is mounted top right side of the motor. The ignition module supplies the tach signal and the coil supplies the spark to the plugs. It is a good idea to replace...

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