Oxygen Sensor
If your fuel economy has dropped or the check engine light came on, a worn oxygen sensor is a common culprit. This sensor measures the exhaust to keep the air-fuel mixture just right. We test it, confirm the fault, and replace it so your engine runs clean and efficient again.
Find a TechnicianCommon causes
- Normal aging of the sensor element after high mileage
- Contamination from oil, coolant, or leaded fuel residue
- Rich or lean running conditions burning out the sensor
- Damaged wiring, connector, or heater circuit
- Exhaust leaks upstream skewing the sensor readings
Frequently asked questions
How long do oxygen sensors last?
Most last around 60,000 to 100,000 miles, but contamination or engine problems can shorten that. We'll confirm yours is the issue before replacing it.
Will a new oxygen sensor improve my gas mileage?
Yes, if a failing sensor was the cause. A worn sensor often makes the engine run rich, wasting fuel, so a good replacement usually restores efficiency.
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