Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Mitsubishi Diamante

Mitsubishi Diamante Oxygen Sensor Replacement costs $189 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$160 to $308
Labor: $70 -$192
Parts: $90 -$116
Average Dealer price
$273 to 456
Average Shop price
$196 to 346
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
2000 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$168.57Shop/Dealer Price$207.73 - $292.54
1995 Mitsubishi DiamanteV6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$272.38Shop/Dealer Price$333.49 - $438.04
1999 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$166.74Shop/Dealer Price$205.47 - $288.94
2000 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$165.47Shop/Dealer Price$203.90 - $286.43
1997 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$167.27Shop/Dealer Price$206.12 - $289.97
1994 Mitsubishi DiamanteV6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$274.35Shop/Dealer Price$335.77 - $441.66
1998 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$167.72Shop/Dealer Price$206.75 - $291.00
2003 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$193.48Shop/Dealer Price$238.93 - $342.48
Show example Mitsubishi Diamante 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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Meet some of our expert Mitsubishi mechanics

Real customer reviews from Mitsubishi owners like you.

445 reviews
Chris
17 years of experience
Chris arrived early, was very efficient and very kind. He talked me through the whole process of replacing my rotors and my brake pads, he even diagnosed my broken windshield wiper and directed me how to get it fixed in the most cost effective manner. I highly recommend him! I will definitely request him next time
2006 MITSUBISHI ENDEAVOR - BRAKES, STEERING AND SUSPENSION INSPECTION
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180 reviews
Peter
31 years of experience
I love this service and Peter is excellent!
2002 MITSUBISHI ECLIPSE - CAR RADIATOR REPLACEMENT
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75 reviews
Timothy
17 years of experience
The overall service I got was satisfactory, I was pleased with the work preformed and his knowledge regarding engines. I had multiple leaks from engine components so the job was time consuming. it was a hot day and Tim completed the work in the estimated allotted time frame. I would recommend his services to anyone looking to get repair work done on their vehicle.
2001 MITSUBISHI DIAMANTE - POWER STEERING PUMP REPLACEMENT
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34 reviews
Carlos
12 years of experience
Carlos is a super nice guy. He was very honest and informed me about what the car needed and didn't need. He answered all my questions about the car I was looking to buy and on top of that he also answered every general car question I had! Will definitely use him again in the future for my mechanic needs.
1999 MITSUBISHI MONTERO SPORT - PRE-PURCHASE CAR INSPECTION
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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
2000 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$168.57Shop/Dealer Price$207.73 - $292.54
1995 Mitsubishi DiamanteV6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$272.38Shop/Dealer Price$333.49 - $438.04
1999 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$166.74Shop/Dealer Price$205.47 - $288.94
2000 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$165.47Shop/Dealer Price$203.90 - $286.43
1997 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$167.27Shop/Dealer Price$206.12 - $289.97
1994 Mitsubishi DiamanteV6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$274.35Shop/Dealer Price$335.77 - $441.66
1998 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$167.72Shop/Dealer Price$206.75 - $291.00
2003 Mitsubishi DiamanteV6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$193.48Shop/Dealer Price$238.93 - $342.48
Show example Mitsubishi Diamante Oxygen Sensor Replacement prices

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