Audi 4000 Quattro Oxygen Sensor Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Oxygen Sensor Replacement Estimate for Audi 4000 Quattro

Audi 4000 Quattro Oxygen Sensor Replacement costs $158 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$158 to $168
Labor: $70 -$80
Parts: $88
Average Dealer price
$268
Average Shop price
$193
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1984 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.49 - $464.99
1986 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.61 - $465.20
1987 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.53 - $465.06
1986 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.56 - $465.12
1984 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.50 - $465.02
1987 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.48 - $464.97
1985 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.64 - $465.25
1985 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.60 - $465.19
Show example Audi 4000 Quattro Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service & Cost

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

Keep in mind:

  • 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 this service?

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 Oxygen Sensor Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
Backed by 12-month, 12,000-mile guarantee

Meet some of our expert Audi mechanics

Real customer reviews from Audi owners like you.

828 reviews
Chris
18 years of experience
Chris is fantastic! Will ask for him again to service my Audi A4
1998 AUDI A4 QUATTRO - WINDOW MOTOR / REGULATOR ASSEMBLY REPLACEMENT (DRIVER SIDE REAR)
449 reviews
Dan
35 years of experience
Arrived on time and was very processional.
2007 AUDI A6 QUATTRO - CHECK ENGINE LIGHT IS ON INSPECTION
320 reviews
Stefan
13 years of experience
Stefan came 3 times to solve several car problems, which he solved very methodically. He came on time and finished the jobs in a reasonable time. I also like the fact that they come to your own drive way, wow! He calls you and tells you what time he is coming. Also, everything is done online. It all very convenient. The cost turned out cheaper than the dealer.
2001 AUDI A6 QUATTRO - REPLACE VACUUM HOSES, CLEAR MEMORY, RECHECK SAIS. CHECK TO SEE IF DRIVE CYCLE COMPLETES.
124 reviews
Chris
22 years of experience
Chris was not only on time but early. A very personable and knowledgeable person.. very professional. I would not hesitate to call Chris again for my automotive needs.
2000 AUDI A6 QUATTRO - CHECK ENGINE LIGHT IS ON INSPECTION
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1984 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.49 - $464.99
1986 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.61 - $465.20
1987 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.53 - $465.06
1986 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.56 - $465.12
1984 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.50 - $465.02
1987 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.48 - $464.97
1985 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.64 - $465.25
1985 Audi 4000 QuattroL5-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$245.26Shop/Dealer Price$314.60 - $465.19
Show example Audi 4000 Quattro Oxygen Sensor Replacement prices

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.

1-800-701-6230 · hi@yourmechanic.com