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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246 reviews
Godwin
19 years of experience
Great service
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137 reviews
Richard
6 years of experience
Richard is very professional, helpful, practical and patient; he will explain to you exactly what needs to be done in a way that's easy to understand.
2008 MAZDA 3 - TIE ROD END REPLACEMENT (FRONT LEFT OUTER, FRONT RIGHT OUTER)
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111 reviews
Jose
12 years of experience
Excellent job completed.
1993 MAZDA 929 - HEATER HOSES REPLACEMENT (LOWER, UPPER)
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105 reviews
Alfredo
16 years of experience
Alfredo was on time,polite & very informed,he explained everything very clearly.
2008 MAZDA 6 - CAR AC COMPRESSOR 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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