Oxygen Sensor Replacement Estimate for Mazda 626

Mazda 626 Oxygen Sensor Replacement costs $143 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$109 to $196
Labor: $70 -$80
Parts: $39 -$116
Average Dealer price
$170 to 325
Average Shop price
$132 to 229
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CarServiceYourMechanic PriceShop/Dealer Price
1990 Mazda 626L4-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$177.82Shop/Dealer Price$219.29 - $311.05
2001 Mazda 626L4-2.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$145.10Shop/Dealer Price$178.46 - $245.73
1988 Mazda 626L4-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$122.18Shop/Dealer Price$149.77 - $199.81
1993 Mazda 626L4-2.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$174.38Shop/Dealer Price$215.04 - $304.25
1997 Mazda 626L4-2.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$145.22Shop/Dealer Price$178.55 - $245.86
1993 Mazda 626V6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$176.35Shop/Dealer Price$217.45 - $308.10
2002 Mazda 626V6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$159.90Shop/Dealer Price$196.98 - $275.36
1989 Mazda 626L4-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$122.18Shop/Dealer Price$149.81 - $199.88
Show example Mazda 626 Oxygen Sensor Replacement prices
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Parts required for a Mazda 626 Oxygen Sensor Replacement

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308 reviews
Dan
34 years of experience
Great
1998 MAZDA 626 - CAR IS NOT STARTING INSPECTION
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218 reviews
Brandon
13 years of experience
He arrived early for the appointment which is always great. He was very knowledgable, and I felt that he did a great job.
1997 MAZDA 626 - POWER STEERING FLUID SERVICE
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109 reviews
Augie
26 years of experience
Augie was on time with the needed part and his tools. We talked a little about the process and he wanted to do a diagnosis first at no charge. After determining the suspect starter was at fault, he got right to work and had the job complete within the specified time. He took extra care and was sure to do a final inspection of the finished job. He knows cars and I recommend him for your car needs.
1995 MAZDA 626 - STARTER REPLACEMENT
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63 reviews
Melvin
6 years of experience
Very good worker
1993 MAZDA 626 - ENGINE MOUNT REPLACEMENT (REAR)
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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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