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Exhaust and Car Emission Repairs Home Page > Parts of Car Emissions > Oxygen Sensor

Function: Senses oxygen content in the exhaust gas. The Powertrain Control Module (PCM) uses this input to optimize the combustion process.

Signs of Wear: Rough-running engine, poor fuel economy, "Service Engine Soon" light illuminates.

Have your vehicle's exhaust and emission system checked by an ASE Certified Technician in Exhaust and Emissions. Schedule service today to visit our auto repair facility on the southwest side of Houston.

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