Oxygen Sensor Replacement Estimate for Mazda Protege5

Mazda Protege5 Oxygen Sensor Replacement costs $297 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$243 to $361
Labor: $70 -$80
Parts: $173 -$281
Average Dealer price
$439 to 655
Average Shop price
$299 to 434
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CarServiceYourMechanic PriceShop/Dealer Price
2002 Mazda Protege5L4-2.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$373.52Shop/Dealer Price$463.92 - $702.46
2002 Mazda Protege5L4-2.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$253.32Shop/Dealer Price$313.74 - $462.17
Show example Mazda Protege5 Oxygen Sensor Replacement prices

Parts required for a Mazda Protege5 Oxygen Sensor Replacement

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Real customer reviews from Mazda owners like you.

246 reviews
Godwin
19 years of experience
Very helpful and explains everything well
2002 MAZDA PROTEGE5 - CHECK ENGINE LIGHT IS ON INSPECTION
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137 reviews
Richard
6 years of experience
Richard was a wonderful guy to work with. He showed up on time, and finished about an hour ahead of the three hours scheduled for the repair. He also encouraged me to watch him because he enjoys teaching the consumer what exactly is going on. I really appreciated that being somewhat of a novice when it comes to car repairs.
2007 MAZDA 3 - BRAKE PADS REPLACEMENT (FRONT, REAR)
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136 reviews
Casey
19 years of experience
Knowledgable, proffessionable, and punctual! Love this service! More guys like Casey and you guys are in the clear !
2014 MAZDA 3 - PRE-PURCHASE CAR INSPECTION
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73 reviews
Danny
6 years of experience
First off let me thank Danny for doing such a great job. My clutch feels like butter now (this is a good thing). He called me before the appointment to confirm, let me know of traffic he hit along the way, clarified what I needed to be worked on, and completed the job. Danny is a great asset to YourMechanic!
2006 MAZDA 6 - CLUTCH SLAVE CYLINDER REPLACEMENT
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All about Oxygen Sensor Replacement

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.

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