Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for BMW L6

BMW L6 Oxygen Sensor Replacement costs $169 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$169 to $179
Labor: $70 -$80
Parts: $99
Average Dealer price
$291
Average Shop price
$207
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceYourMechanic PriceShop/Dealer Price
1987 BMW L6L6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$176.98Shop/Dealer Price$229.13 - $328.42
1987 BMW L6L6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$175.00Shop/Dealer Price$226.78 - $324.67
Show example BMW L6 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.

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15 years of experience
I needed a Pre-purchase Inspection on a BMW E85 Z4 3.0si, and since the top motor was being replaced it needed to be a the dealership where the car is located. Jamahl called to say he arrived early, but I missed the call. He called me again after it was completed, and basically confirmed my thoughts on the car, besides cosmetic things it was in very good condition. It's getting new tires and softtop motor, and Inspection II is due which I already due. The dealership tech said he was cordial, efficient and professional. Those are hallmarks of an excellent technician. At the end my phone consult with Jamahl, I asked him if I can request him going forward to work on my Z4, he agreed and told me the steps required for it. I will request his services going forward. Excellent service.
2007 BMW Z4 - PRE-PURCHASE CAR INSPECTION
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Patrick
27 years of experience
unlike the first mechanic you sent me last year, patrick was wearing a nice clean uniform. and a lot friendlier.
2008 BMW 328I - CAR BATTERY REPLACEMENT
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17 years of experience
Wonderful young man, hard working and knowledgeable, got right to work and did a great job!! Looks like I have a new mechanic. Highly recommend this mechanic.
2004 BMW 330CI - BRAKE PADS REPLACEMENT (FRONT, REAR)
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13 years of experience
Daniel did an awesome job in replacing the radiator and finding the problem with the 'Check Engine soon' light in my car. Highly professional and experienced person. Would definitely recommend.
2004 BMW 325I - CAR RADIATOR REPLACEMENT
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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
1987 BMW L6L6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$176.98Shop/Dealer Price$229.13 - $328.42
1987 BMW L6L6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$175.00Shop/Dealer Price$226.78 - $324.67
Show example BMW L6 Oxygen Sensor Replacement prices

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