Details

• Brand:

  

  

• SKU:

  DY-1179

• Positions: Rear Lower, Rear
• Other Names:

  Motorcraft™ Rear Oxygen Sensor, Sensor Exhaust Gas Oxygen

• Description:

  This genuine Motorcraft oxygen sensor, catalog number DY-1179, is a heated exhaust gas oxygen (HEGO) sensor for 2012-2018 Ford Focus models. Threaded into the exhaust, it reports the oxygen content of the exhaust stream to the powertrain control module as a switching voltage signal, and the module uses that feedback to hold the air-fuel mixture near the ideal ratio during closed-loop operation, trimming fuel delivery to balance power, fuel economy, and emissions. When the sensor slows down or fails, the check-engine light commonly sets oxygen-sensor or fuel-trim codes in the P0130 through P0161 range, and drivers often experience poor fuel economy, rough or surging idle, hesitation, a sulfur smell from the exhaust, and a failed emissions test. Because the sensing element operates in a harsh, high-temperature exhaust environment, its response time degrades with age and contamination from oil or coolant, so installing a correct Motorcraft unit restores accurate feedback and proper closed-loop fuel control. This is the original-equipment Motorcraft component listed by Ford as the exhaust gas oxygen sensor DY-1179, and it uses the factory connector and thread form for a direct fit on the applicable Focus exhaust. Handle the sensor by its body, keep the tip free of grease and silicone, torque the threads to specification, and clear stored trouble codes after installation. Confirm the sensor location and connector against your vehicle before ordering.

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