Home » Oxygen Sensors » After You Replace An Oxygen Sensor Will The Check Engine Light Turn Off Automatically After You Replace An Oxygen Sensor Will The Check Engine Light Turn Off Automatically I just had the downstream oxygen sensor changed on my 2003 Monte Carlo and was wondering if the check engine light would turn off by itself eventually? Or do I have to unplug the battery? Tags:Check Engine Light, Monte Carlo, Oxygen Sensor Related Questions How Do I Change The Oxygen Sensor On A 1998 Volkswagen Jetta I just need a picture or location of the sensor so I can replace it. I Need To Have My 2001 Honda Accord Oxygen Sensor Replaced. Where Do You Recommend Buying The Partand Why I need to have my 2001 Honda Accord oxygen sensor replaced. Where do you recommend buying the part(and why)? I live in Dallas, TX. Thank you. I plan to Answers for The Question bookie0116 Not necessarily, you may have other problems that’s causing the engine light to stay on. baldie you unhook the battery before you install it, wait awhile and hook the battery back up. that should clear the codes. biga87718 Unplugging the battery rests the computer. Course I would have disconnected the battery before replacing the sensor. joan After you put in the new sensor, disconect the negative battery terminal for a few minutes then reconnect it. that will reset your check engine light. after about 90 or so miles, if your check engine light doesn’t come back on, you should be in the clear. dr_layne No the light will not turn off right away. You can disconnect the negative terminal on the battery for 10-15mins, or take the car to an Autozon or Advance auto parts and they will reset the light for free. catmandew It will turn itself off if that was the only thing making it go on. Usually after 25 closed-loop cycles on most vehicles. mdk68gto depending on what year you are talking about, it could but that would be on a pre 96 car. on the obd2 systems, it need to see 40 successful drive cycles before that light will go off on its own. unplugging the battery might not do it Incoming search terms: After Replacing 02 Sensor Will Light Go Out,After Installing Maf Sensor How Long Before Service Engine Soon Light Goes Out,How Long Does It Take After The O2 Sensir Is Replaced To Clear A Check Engine Light,How Long Does It Take Before Check Engine Light Goes Out On 2002 Ford Focus,How Long Does It Take For The Check Engine Lightto Stay Off After Batter Is Disconected,What Happens If You Did Not Disconnect Negative Battery When Installing Oxygen Sensor?,When I Changed My 02 Sensor The Light Came Back On Do I Just Need To Clear It,How Long Does It Take To Replace A 2005 Honda Accord 02 Sensor,How Long Til 02 Sensors Reset After Flashing Computer On A Jeep,How Long To Wait After Installing New O2 Sensors In Suburban Truck?