Oxygen Sensor Replacement Cost
Replace a failed O2 sensor in the exhaust system.
Parts vs Labor
60% / 40%
Typical share of total cost
Labor Time
30 minutes to 1.5 hours
At a typical shop
Difficulty
Confident DIY
2 of 5
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Common Symptoms
Check engine light with code P0130 to P0167
Drop in fuel economy
Rough idle
Failed emissions test
What It Is
Oxygen sensors measure how much unburned oxygen is in the exhaust so the computer can fine-tune the fuel mixture.
Why It Matters
A bad sensor wastes fuel and can damage the catalytic converter, which costs much more to replace.
How to Save Money on Oxygen Sensor Replacement
- Most cars have 2 to 4 sensors, only replace the failed one(s) not all of them
- Denso, Bosch, and NGK make the sensors that come on most cars new
Often Done Together
Shops commonly pair oxygen sensor replacement with these jobs to save on overlapping labor:
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Frequently Asked Questions
How long do O2 sensors last?
Typically 60,000 to 100,000 miles. They wear gradually rather than failing all at once.
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