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Check Engine Light On? Could Be A Faulty O2 Sensor

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  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat 8:00AM - 3:00PM
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Check Engine Light On? Could Be A Faulty O2 Sensor

Car Care Check Engine Light Advice

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 People Say About Us

Chattanooga
  • reviewiconHonest Mechanic
    Electrical Services, near Chattanooga, Tennessee
    , 02/04/2020

    Great work!! Chris was the person that took care of me up at the front desk. He is also the manager, he is a very kind and knowledgeable employee!!

  • reviewiconHonest Mechanic
    Electrical Services, near Chattanooga, Tennessee
    , 08/10/2019

    They do excellent work.totally satisfied, If need to I would most definitely use them again.

Chattanooga
  • reviewiconFast Full Service
    Car & Truck Care, near Chattanooga, Tennessee
    , 11/20/2019

    Great service and did a wonderful job. Very glad to have my truck back up to par

  • reviewiconFast Full Service
    Car & Truck Care, near Chattanooga, Tennessee
    , 11/20/2019

    Did an awsome job !! Went to the maxi first time on red bank and man did they botch the job not to mention over charged me from what after what they initially told me ..I have access to a lift and when i brought my truck back to my shop and lift it up to inspect the work , and what a quality job they did . super happy , paid a little more then what i expected but after i saw the work they did , money well spent . Thanks again guys !

Chattanooga
  • reviewiconBest Local Mechanic
    Undercar Services, near Chattanooga, Tennessee
    , 10/17/2019

    This is a great place for anyone who needs to have work done. I had my sway bar links replaced at the dealership and when I picked the car up, it was making a knocking sound near the wheels/underside of the car. Turns out the dealership didn't tighten my sway bar and also stripped a nut/bolt when they repaired my sway bar links. Maxi offers free inspections and the dealership was trying to charge me again just to have it looked at after they obviously messed something up on the car. I took it to Maxi and explained my situation and they tightened my sway bar free of charge. I highly recommend this shop.

  • reviewiconBest Local Mechanic
    Undercar Services, near Chattanooga, Tennessee
    , 02/04/2020

    Great work!! Chris was the person that took care of me up at the front desk. He is also the manager, he is a very kind and knowledgeable employee!!

Call us for service: 423-892-6159

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