Test Oxygen/Air-Fuel Ratio Sensor(s)
Exhaust System
A test of the oxygen sensor or air-fuel ratio sensor, which measures how much unburned oxygen is in the exhaust to optimize engine performance. A faulty sensor causes rough running, poor fuel economy, high emissions, or triggers a check engine light.
Estimated Cost
$80–$250🔒
Parts + labor, based on the parts this service typically requires. Not specific to your vehicle or region — this spans all vehicles, all regions, and all part grades, so treat it as a rough ballpark rather than a quote.