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507-451-8678 | 505 W North Street Owatonna, MN 55060

Check Engine Light On? Could Be A Faulty O2 Sensor



According to the annual CarMD Vehicle Health Index one of the most common check engine light repairs is replacing the oxygen sensor. This relatively minor repair can be costly if neglected, leading to as much as 40 percent lower fuel efficiency, causing further damage to your vehicle's exhaust system and adversely impacting the environment.



Vehicles with faulty oxygen sensors typically seem to drive and handle well, but the malfunction can dramatically decrease fuel efficiency and lead to costlier repairs if ignored. A faulty oxygen sensor means your vehicle is emitting more pollutants and if the check engine light is illuminated, it may not pass vehicle emissions testing in those states requiring it for vehicle registration.



A vehicle's oxygen sensors are mounted in the exhaust system; they monitor the catalytic convertor's operation and the level of oxygen in exhaust gases to maintain efficient engine operation. The best way to prevent an oxygen sensor failure is to follow a regular service schedule, including routine oil changes.



Unlike the past nine years of the annual CarMD report, costly catalytic converter replacement edged out O2 sensor replacement as the most common check engine light repair. Catalytic converters do not typically fail unless maintenance and other repairs are ignored or the vehicle is older. Average vehicle age has increased from 10.6 years to 11.7 years over the past decade, contributing to this outcome.



It is important that car owners check the reason for an illuminated check engine light without delay and make necessary maintenance to avoid more costly repairs, like catalytic converter replacement, down the road. If you find your vehicle needs service, call your trusted local repair shop.



Source: Car Care Council



What Our Customers Are Saying

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I called because one tire was low - after sliding into a ditch and being able to drive out - This was a Friday around 4:15. Will allowed me to come in, filled the tire, removed a piece of trim that had come loose during my excursion into the ditch, sprayed out the rest of the snow in the tire-which stopped the steering wheel from shaking. This was all done in a short period of time and I was able to finish my trip to Minneapolis. I wish I lived closer to this shop! I was thrilled with the service!

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Ron's Repair has always been dependable and has treated me so great. There is no other place I would take my vehicle.

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Friends recommended so I took our car for a oil change and tire rotation. They did a good job! Bonus is the beautiful Irish setters!

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Ron's has always been fair and honest, they do a great job. It's the only place I trust taking my car to.

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I have driven my car back to the dealership where I bought the car from for years which was over an hour away because I never felt I received the honest and straightforward auto service I deserved in Owatonna. Out of a real sense of urgency I gave Ron's Repair a try and I can't tell you how pleased I have been with the customer service as well as the auto repairs, maintenance and straight answers about what I really need to take care and what can wait. I highly recommend you give Ron's a chance to take care of your auto repairs needs they won't disappoint.

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I was quite impressed with my first experience with Rons repair. My car just came out of warranty and I was having some issues with my A/C. Rons was able to get my car in right away and had it fixed that same day, but what really made them stand out is I had a cabin air filter in my backseat that I was going to install at some point and when I picked up my car they had informed me that they went ahead and installed that filter for me. I was not expecting that, saved me the hassle of doing it and it compelled me to give them a great review. All my service work will from now on be going to Rons!!

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