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Estimates Exhaust and Emissions Oxygen Sensor Replacement

BMW 540i xDrive Oxygen Sensor Replacement

As is always the case, the cost of the repair depends on the make, model, and year of your car.

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$90.58 $1010.5
Average Shop Price $428
RepairSmith Price $243
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This range covers an average oxygen sensor replacement. Tell us your car to get a guaranteed price from RepairSmith.

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BMW 540i xDrive Oxygen Sensor Replacement

RepairSmith offers upfront and competitive pricing. The average cost for BMW 540i xDrive Oxygen Sensor Replacement is $388. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.

Car
Location
Quoted on
Price
2018 BMW 540i xDrive
3.0L L6 Turbo Base • 31,000 miles
Henderson NV 89014
Nov 21, 2020
$393 - $481
2017 BMW 540i xDrive
3.0L L6 Turbo Base • 54,000 miles
San Jose CA 95122
Nov 13, 2020
$364 - $444
2018 BMW 540i xDrive
3.0L L6 Turbo Base • 13,000 miles
Burlingame CA 94010
Nov 11, 2020
$407 - $497
2018 BMW 540i xDrive
3.0L L6 Turbo Base • 32,000 miles
Las Vegas NV 89107
Nov 6, 2020
$297 - $363
2019 BMW 540i xDrive
3.0L L6 Turbo Base • 23,000 miles
Livermore CA 94550
Nov 3, 2020
$325 - $397
2020 BMW 540i xDrive
3.0L L6 Turbo Base • 22,000 miles
Compton CA 90220
Nov 1, 2020
$311 - $381
2017 BMW 540i xDrive
3.0L L6 Turbo Base • 37,000 miles
Vallejo CA 94592
Oct 21, 2020
$339 - $415
2017 BMW 540i xDrive
3.0L L6 Turbo Base • 41,000 miles
Fremont CA 94539
Oct 16, 2020
$344 - $420
2019 BMW 540i xDrive
3.0L L6 Turbo Base • 32,000 miles
Citrus Heights CA 95611
Oct 13, 2020
$416 - $508
2018 BMW 540i xDrive
3.0L L6 Turbo Base • 26,000 miles
Glendora CA 91741
Oct 9, 2020
$291 - $355
Last Updated:
Jan 21, 2021 4:52 PM
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What is an Oxygen Sensor?

Would you be shocked if I said it’s a sensor to measure oxygen? Okay, but it’s a bit more than that. Cars have both upstream and downstream sensors (also known as O2 sensors). Upstream oxygen sensors are placed in front of the catalytic converter, and measure the amount of oxygen in the exhaust. The car’s computer then uses that data to determine the proper air to fuel ratio.  Downstream oxygen sensors are located behind the catalytic converter, and measure the efficiency of the converter.

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Signs of a faulty Oxygen Sensor

Poor performance

No one likes poor performance. That includes you, and it certainly includes your car. Faulty O2 sensors will feed misinformation to your car’s computer. The computer will then alter the engine in a way that leads to less power, some hesitation and jerkiness, and running rough. Which means you’ll be embarrassed the next time you try to show off at a green light.

Check engine light

Oh, the check engine warning light. That light that you pretend isn’t there when it lights up. How has that worked out for you? Try as you might, ignoring a check engine light won’t make it go away. And oxygen sensor failure is a common cause of the light illuminating.

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How urgent is an Oxygen Sensor replacement?

You’re not really in any danger driving around with a busted O2 sensor. Your car will still be safe to drive. But the performance won’t be ideal, and you may fail an emissions test. You don’t need to drop everything and run straight to a repair, but get around to it when you can.

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