Home
Estimates Exhaust and Emissions Rear Oxygen Sensor Replacement

BMW 328d xDrive Rear Oxygen Sensor Replacement

An oxygen sensor replacement is usually a pretty straightforward and affordable task. We stress the term usually because replacement cost can vary, depending on what type of car you have.

Get a Quote

Find Your Cost

Range for All Cars

This range covers an average Rear Oxygen Sensor replacement. Tell us your car to get a guaranteed price from RepairSmith.

Our repairs come with:

Certified Mechanics  •  
12-Month | 12,000-Mile Warranty

Easy Online Booking  •  7 Days a Week

BMW 328d xDrive Rear Oxygen Sensor Replacement

RepairSmith offers upfront and competitive pricing. The average cost for BMW 328d xDrive Rear Oxygen Sensor Replacement is $371. 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
2016 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 77,000 miles
San Clemente CA 92673
Nov 22, 2020
$352 - $430
2017 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 19,000 miles
Chula Vista CA 91910
Nov 16, 2020
$313 - $383
2018 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 24,000 miles
Redwood City CA 94063
Nov 14, 2020
$300 - $366
2017 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 34,000 miles
Inglewood CA 90306
Nov 9, 2020
$340 - $416
2014 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 102,000 miles
Anaheim CA 92807
Nov 4, 2020
$321 - $393
2017 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 59,000 miles
El Cajon CA 92022
Nov 3, 2020
$330 - $404
2017 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 53,000 miles
Rancho Cucamonga CA 91730
Oct 27, 2020
$348 - $426
2018 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 43,000 miles
Van Nuys CA 91404
Sep 20, 2020
$334 - $408
2016 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 50,000 miles
Colton CA 92324
Sep 18, 2020
$337 - $411
2016 BMW 328d xDrive
2.0L L4 Turbo Diesel Base • 30,000 miles
San Diego CA 92135
Sep 16, 2020
$359 - $439
Last Updated:
Dec 17, 2020 6:25 PM
Get A Quote 12-Month | 12,000-Mile Warranty

What is a Rear Oxygen Sensor?

This might blow your mind but…oxygen sensors (O2s) are sensors that measure oxygen. Yep, the sensors calculate the amount of oxygen in the exhaust stream, then share that information with your car’s main computer. Most modern cars have at least two oxygen sensors: one before the catalytic converter and one after the catalytic converter. In case you were wondering, the catalytic converter, which is located in the exhaust system, is an emissions control device that cleans up the fumes leaving your engine. Anyhow, the front oxygen sensor (also known as an upstream oxygen sensor) is a key input to your car’s computer for fuel control. The computer uses information from the sensor to estimate the engine’s air-fuel mixture. Then, it adjusts fuel delivery accordingly. On the other hand, the rear oxygen sensor (also known as a downstream oxygen sensor) primarily monitors the performance of the catalytic converter. The rear sensor has very little, if any, input regarding fuel control. Oh, and one more thing – most modern oxygen sensors have built-in heaters. When you first start your engine when it’s cold, the heater element gets the sensor nice and toasty. That allows the sensor to get up-to-speed and begin operating more quickly.

About system section icon
Get a Quote 1-Year | 12,000-Mile Warranty

Symptoms of a failing Rear Oxygen Sensor

Check engine light

If your car’s rear oxygen sensor isn’t doing its job, chances are, the computer will notice and turn on the check engine light. The device will also store corresponding diagnostic trouble codes (DTCs) in its brain. Your mechanic can retrieve said codes using an electronic device, called a scan tool.

Failed emissions test

Is it time for your routine emissions test? Well, guess what – you’re not going to pass if the check engine light is on from a bad rear oxygen sensor. You also won’t pass if the rear oxygen sensor is out to lunch and it’s preventing your car’s computer from running its system self-tests.

Get a Quote 1-Year | 12,000-Mile Warranty

How urgent is a Rear Oxygen Sensor Replacement?

The rear oxygen sensor is less of a troublemaker than the front oxygen sensor. For the most part, the rear oxygen sensor just polices the catalytic converter. So, it’s unlikely to leave you stranded and it shouldn’t cause any additional harm to your vehicle.

But it will keep that annoying check engine light illuminated and, really, do you want to look at that thing every day? Plus, a bad rear oxygen sensor can cause you to fail a state emissions test – and nobody wants that.

System section icon
Get a Quote 1-Year | 12,000-Mile Warranty

How can we help?

RepairSmith is here to make car repair easy.

Get a Quote

1-Year | 12,000-Mile Warranty