Check Engine Light Due to Failed Oxygen Sensor on Ford Crown Victoria

One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

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Average mileage: 190,489 (125,777–255,201)
3 model years affected: 1994, 2005, 2006
4 people reported this problem
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problem details
1994 Ford Crown Victoria 125,777 mi,
my car check engine light keeps coming on and it stays on my o2 sensor is bad. my o2 sensor must be there a way to get free service from the makers of the car.