Oxygen Sensor Replacement Estimate for Mazda Protege5

Mazda Protege5 Oxygen Sensor Replacement costs $300 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$245 to $363
Labor: $70 -$80
Parts: $175 -$283
Average Dealer price
$443 to 659
Average Shop price
$302 to 437
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CarServiceYourMechanic PriceShop/Dealer Price
2002 Mazda Protege5L4-2.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$376.12Shop/Dealer Price$467.17 - $707.65
2002 Mazda Protege5L4-2.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$255.87Shop/Dealer Price$316.92 - $467.26
Show example Mazda Protege5 Oxygen Sensor Replacement prices
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Parts required for a Mazda Protege5 Oxygen Sensor Replacement

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Stefan
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He was very knowledgeable in his profession and would highly recommend him again
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Godwin
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Very helpful and explains everything well
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Blake
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Blake was very professional, polite and courteous. He showed up on time to the 2 appointments that I had and completed the 2 fixes that I had on my Mazda6 (power window was not working and the door lock was not working). My only constructive piece of criticism was the actual price of the job was a bit higher than was quoted to me online. I believe it took him much longer to complete the job than was originally anticipated. I plan on using this service again.
2004 MAZDA 6 - WINDOW MOTOR / REGULATOR ASSEMBLY REPLACEMENT (DRIVER SIDE FRONT)
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Kevin
18 years of experience
Kevin was proactive when it came to schedule adjustments. He was also meticulous about the work, down to the torque setting on the lug nuts for a simple tire rotation.
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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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