Toyota Avalon 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

(16)

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

(16)

Oxygen Sensor Replacement Service

How much does a Oxygen Sensor Replacement cost?

On average, the cost for a Toyota Avalon Oxygen Sensor Replacement is $252 with $112 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2014 Toyota AvalonL4-2.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$378.96Shop/Dealer Price$438.55 - $609.22
2004 Toyota AvalonV6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1052.71Shop/Dealer Price$1281.22 - $1962.64
2013 Toyota AvalonL4-2.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$369.95Shop/Dealer Price$427.80 - $597.16
2016 Toyota AvalonV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1237.91Shop/Dealer Price$1512.75 - $2333.08
2015 Toyota AvalonV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1237.91Shop/Dealer Price$1514.22 - $2335.66
2013 Toyota AvalonL4-2.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$650.05Shop/Dealer Price$778.06 - $1157.61
1995 Toyota AvalonV6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$846.51Shop/Dealer Price$1023.51 - $1550.31
2016 Toyota AvalonL4-2.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$369.95Shop/Dealer Price$427.80 - $597.16
Show example Toyota Avalon 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 Toyota mechanics

Real customer reviews from Toyota owners like you.

Excellent Rating

(16)

Rating Summary
15
1
0
0
0
15
1
0
0
0

Michael

35 years of experience
131 reviews
Michael
35 years of experience
Avalon 2000 - Oxygen Sensor - Westminster, CA
Michael arrived promptly before the appointed time. Showed genuine concern over the state of my car, going above and beyond to provide a solution, as well as answering any questions I had. Car received great service. Would strongly recommend to friends and family.

James

25 years of experience
733 reviews
James
25 years of experience
Avalon 2000 - Oxygen Sensor - Los Alamitos, CA
James was very friendly & answered any questions i had. He left everything neat in the garage before he left. It's as if he wasn't there ( in a good way). Seems like a very nice person.

John

27 years of experience
2 reviews
John
27 years of experience
Avalon 2009 - Battery - Port Saint Lucie, FL
very helpful

Jermaine

10 years of experience
9 reviews
Jermaine
10 years of experience
Avalon 1998 - Alternator - Stockbridge, GA
Great overall experience.

Excellent Rating

(16)

Rating Summary
15
1
0
0
0
15
1
0
0
0
Number of Toyota Avalon Oxygen Sensor Replacement services completed
176+
services done by our mechanics
TOTAL NUMBER OF EXPERT Toyota MECHANICS
1700+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Oil Temperature Sensor
If the temperature gauge gives false readings or does not move, you may need to replace the oil temperature sensor.
How Long Does a Yaw Rate Sensor Last?
While While taking a curve at a high rate of speed seems like fun, it can also be quite dangerous. Luckily, there are a number of systems on a car that can make taking hairpin turns quickly much safer. The...
3 Bad Transmission Speed Sensor Symptoms
Discover symptoms of a bad transmission speed sensor to prevent unexpected breakdowns and keep your vehicle's performance in check with YourMechanic.

What does it mean if the message center shows a warning saying “Sensor blocked see manual?”

Your car has a significant number of sensors that play vital roles in a wide range of different systems. If you see the warning “Sensor blocked see manual” come across your message center, it’s natural to feel a little nervous....

CEL limp mode reflash

Hello there. The type of issues you have described are not uncommon with the newer F series diesel trucks. The technical service bulletins (https://www.yourmechanic.com/article/how-to-use-a-technical-service-bulletin-by-parker-hill) are put out as a way to get vehicles repaired properly once a common failure point...

How to replace the cam shaft sensor.

The camshaft sensor on this engine is mounted on top of the synchronizer in the front center of motor. The noise may be in the housing and not the sensor. The sensor can be removed from the synchronizer housing and...

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 (844) 997-3624 · hi@yourmechanic.com