Inspect Oxygen/Air-Fuel Ratio Sensor(s)
Exhaust System
A visual check of the oxygen sensors or air-fuel ratio sensors mounted in the exhaust system, which monitor exhaust gas to help the engine adjust fuel mixture in real time. A faulty sensor causes incorrect fuel ratios, reduced fuel economy, and increased
Estimated Cost
$60–$180🔒
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.