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How Much Does Oxygen Sensor Replacement Cost?

Updated October 2026 By RepairCostLab Editorial Team

Expect to pay $85 to $360 at an independent shop for a typical car, and up to $430 at a dealership. A bad oxygen sensor turns on the check engine light and quietly hurts fuel economy. It is usually a quick, inexpensive fix.

Parts$40–$200
Labor$45–$160
Shop time0.4–1 hours
DIY difficultyModerate (2/5)

Estimate your cost

Vehicle type Where you'll get it fixed Your area

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Ranges cover aftermarket to OEM parts and typical book labor times. How we calculate this.

Oxygen Sensor Replacement cost by vehicle type

Vehicle	Parts	Labor	Total
Compact / economy car e.g. Civic, Corolla, Elantra	$40–$200	$45–$160	$85–$360
Midsize sedan / crossover e.g. Camry, Accord, RAV4, CR-V	$45–$230	$50–$175	$95–$405
Truck / full-size SUV e.g. F-150, Silverado, Tahoe	$50–$260	$50–$185	$105–$445
Luxury / European e.g. BMW, Mercedes, Audi, Lexus	$70–$360	$55–$210	$130–$570

Independent shop, average US labor rates. Per sensor. Upstream (air-fuel) sensors cost more than downstream sensors.

Independent shop vs. dealer vs. chain

Where	Hourly rate	Typical total
Independent shop	$110–$160	$95–$405
Chain (Midas, Firestone…)	$120–$175	$100–$425
Dealership	$160–$230	$115–$485

Shown for a midsize sedan or crossover.

What does it do?

Oxygen sensors measure oxygen in the exhaust so the engine computer can adjust the fuel mixture and monitor the catalytic converter.

Signs you need this repair

Check engine light (codes P0130–P0167)
Worse fuel economy
Rough idle
Failed emissions test
Rotten-egg smell

Can you do it yourself?

Difficulty: Moderate (2/5). Unplug and unscrew with an oxygen sensor socket. Rusted sensors may need penetrating oil or heat.

Doing it yourself saves the labor portion, roughly $45–$160, so you would pay only for parts ($40–$200).

Is it worth fixing?

Yes. It is an affordable repair that restores fuel economy and protects the catalytic converter.

How to save money

Read the code to identify exactly which sensor (bank and position) has failed.
Use OEM-brand sensors (Denso, Bosch, NTK): cheap universal sensors cause repeat problems.

Questions to ask your mechanic

Which sensor is it: upstream or downstream, bank 1 or bank 2?
Is the sensor an OEM brand like Denso, Bosch or NTK?
Could an exhaust leak be causing the code?

Asking for a written, itemized estimate (parts, labor hours and hourly rate) is your right in most states and makes quotes easy to compare.

Frequently asked questions

How many oxygen sensors does a car have?

Two to four: one before and one after each catalytic converter.

How long do oxygen sensors last?

Typically 60,000 to 100,000 miles.

Can a bad O2 sensor damage the catalytic converter?

Yes, over time a rich mixture can overheat and clog the converter.

Related repair costs

Sources and methodology

Estimates combine typical book labor times, current aftermarket and OEM parts prices, and 2026 US shop labor rates. See exactly how we calculate them.

Found a price that looks wrong for your area? Tell us: we review every correction.