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Oxygen Sensor Relay

Critical For Operation

Exhaust System

Controls power to the oxygen sensors to ensure proper operation.

The oxygen sensor relay manages the electrical power supplied to the oxygen sensors, ensuring they receive power only when needed to accurately measure oxygen levels in the exhaust gases.

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Typical part cost
$20–$60🔒
🔧
Typical labor cost
$50–$150🔒
🛣️
Typically lasts
80,000–150,000 mi
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Or about
5.0–10.0 years
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DIY difficulty
3/10

⚠️ Owners Often Notice

If the Oxygen Sensor Relay is starting to fail, these are the signs owners most commonly report before it gets worse:

Check engine light
Oxygen sensors not working
Emissions failure
Poor fuel economy

Related Services

Services commonly performed on or around this part.

Replace Oxygen Sensor Relay

No standard interval on file

Inspect Oxygen Sensor Relay

No standard interval on file

Test Oxygen Sensor Relay

No standard interval on file