I replaced the alternator, that fixed the implicit parasitic draw, but did not affect the O2 sensor issue. After that, your ECU should be reset. O2 Sensor Replacement- Goodbye Check Engine Light: I bought a 98 Ford ranger XLT several months ago and have been working through it fixing issues whenever time permits. Once you've replaced your vehicle's O2 sensor, you'll need to reset the ECU so it can properly gather information from the new O2 sensor. Oxygen sensor defective. The simplest way to reset the engine light is to drive the car with the light on for several miles. Having a bit of an issue on my petrol Fiesta. The amount of driving required depends on the particular model and perhaps the type of driving you do, whether stop-and-go or highway. Just work rich as hell. I'm going to try the battery disconnect when I get home. Was the code reset after changing the sensor? The check engine light went out but came back on again. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, "Auto Repair For Dummies"; Deanna Sclar; IDG Books Worldwide; 1999, "How To Repair Your Car: Car-Care Tips, Simple Repairs, Driving & Maintenance Tips, and more..."; Paul Brand; Motorbooks International; 2006. idle problems after changing o2 sensor please help! Three weeks ago, I took the van in to replace the O2 sensor. Do I just reset the - Mazda 2002 Protege question does the computer have to be reset after replacing oxygen sensor? I'd replace the dead one now and wait for the other to fail.The only savings to replacing them both now is jacking it up and putting it onstands (yawn). Locate the fuse for the ECU using the fuse diagram on the underside of the fuse panel cover. More often than not an O2 sensor code is fixed by replacing the sensor but it could also be a wiring or ECM issue, an exhaust leak, or some other driveability issue that makes the computer think the O2 is bad when it is not. The only sensor model guaranteed to work with the vehicle’s onboard computer is the same one the ... contact an auto parts store before attempting to change the sensor. Turn on the ignition in the ignition position, but don't turn on the engine (it won't start anyway). Yes the computer has to be reset. Turn on the ignition in the ignition position, but don't turn on the engine (it won't be carrying in any way). ), it will take some amount of driving before everything is considered "ready." idle problems after changing o2 sensor please help! after replacing bank 1 and 2, I reset the it with the code reader. Jump to Latest Follow ... see if the old messed up carb and sensors are able to reset to factory settings to straighten things out. To reset the Check Engine light you can try this. How do you reset the computer on a honda rubicon - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. Our experts are at your service — whenever and wherever you may be. Wait five minutes and insert the fuse again. You could also take the old sensor to a ... You may have more than one. How to Disable a Cadillac Alarm. Should I reset computer after changing o2 sensor? To reset the ECU: 1 Disconnect neg. If you have to drive 10 minutes before the Check Engine light comes on … I need to reset my Car computer after I fix the O2 sensor I have a tester that reads the codes. This will indicate that your ECU has been restored. You should do it. Engine control lamp clicks and then stops. I duly checked the sensor with a multimeter and indeed the heater was gone. On pins number three and four measure the resistance for the heater circuit. After you put in the new sensor, disconect the negative battery terminal for a few minutes then reconnect it. If you notice the engine light is still on after three days, then it is time you tried some of the methods showed above or take it for mechanical repairs. By continuing to use this site you consent to the use of cookies on your device as described … Favorite Answer. The ECU then adjusts the air-to-fuel ratio to optimize the fuel combustion. Posted by larry small on Aug 02, 2014. Unplug the wire at the connector and remove O2 sensor. Turn on the ignition in the on position but do not turn on the engine (it will not start anyway). I've had two O2 sensor failures on my '01 PF, a LONG time apart. The control lamp of the flash engine and then stop. 01-08-2008, 09:01 AM Had to replace my up stream 02 sensor on bank 1 this weekend and I didn't bother to reset the ECU. Remote Assist is your resource for a virtual diagnosis and repair, In-home service required? The lamp of the check engine will blink and then turn off. Open the fuse panel in the driver-side foot well, under the steering column, by pulling down on it with your fingers. It went into limp mode recently (with a light). If this is your first visit, be sure to check out the FAQ by clicking the link above. Print this page; Share this page × Ad. Bank 1 sensor 2 is the one on the catalytic converter. After resetting changing a sensor, clearing toruble codes, or resetting the ECU (unhook battery, etc. after about 90 or so miles, if your check engine light doesn’t come back on, you should be in the clear. So I took out my OBD2 scanner and it pointed to the O2 sensor. Its also possible that its not a problem with the O2 sensor itself, but the wiring to it. For details on how we use cookies, collect data, & how to manage your consent please see our Cookie Policy & Privacy Policy. Hi there. I am a Registered Financial Consultant with 6 years experience in the financial services industry. There are some self adaptive parameters that will be affected by a MAP sensor. You may have to register before you can post: click the register link above to proceed. It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. terminal of battery for about 10 minutes. 4 Turn ignition key to ON (don't start car) and leave it there for 3 minutes. The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. Its also possible that its not a problem with the O2 sensor itself, but the wiring to it. Fuel injector problem. First failure occurred on warrantee, second at maybe 100K miles. Want Answer 0. This will indicate that the ECU has been restored. I have written for Demand Studios since 2009. No, it is not necessary to turn off the battery by replacing the O2 sensors. 8 years ago. Probable cause(s): If bank one and two codes set together suspect fuel pressure or MAF sensor. Might have even been the same sensor. Put the AED performance tune on my car the other night after changing a bad O2 sensor and drove it to work the next day (25 miles each way). I took it in this morning to get inspected and it showed O2 sensor not ready, resulting in a failure. Everything else is ready. This instructables will con… If it is not within spec replace the sensor. Clicking this will make more experts see the question and we will remind you when it gets answered. So I am considering changing out the oxygen sensor … 2 Reconnect battery 3 Open driver's door and leave open (important!) The final change was to do what Austin suggested, and was backed up by a FiTech support rep, re-flash the ECU. Its not the first. Is it mandantory to reset ECU after replacing UPsteam O2 sensor? Computer reset after replacing the O2 sensors? The "Check Engine" light will blink, then shut off. A local tech is on their way to help. After replacing the throttle body to your engine, if the engine light was on and has a pending code, the code will go away. Hope it fixes your problems. otherwise it will take a few hundred km for the ecu to self-adjust. I guess my real question is: do the codes HAVE to be cleared before the new O2 sensors will start working? It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. Reset computer after replaceing o2 sensor. I am trained in the financial planning process, with an emphasis in life insurance and annuity contracts. It is a coincidence that it happened shortly after your oil change unless you were messing with the wiring or something. When one of your Grand Caravan's sensors indicates that a system is not operating properly, ... How to Reset a 2005 Chevrolet Computer. Was the code reset after changing the sensor? Turn on the ignition in the on position but do not turn on the engine (it will not start anyway). Re: Do I need to Reset ECU after Map sensor replaced? Turn the ignition to the "On" position but don't crank the engine (it won't start anyway). Sometimes an O2 sensor fails, and you need to replace it. The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. This will indicate that your ECU has been restored. Depending on your emissions rating which you will find under the hood on the label the pin configurations are different. The computer will reset itself after a few driving cycles. Pull the fuse for the ECU using the fuse pullers in the fuse panel. Anonymous. I recently change my O2 sensor on my 2000 chevy silverado. The lamp of the check engine will blink and then turn off. You can reset it with a code reader or by disconnecting the battery (-) terminal for a few minutes. that will reset your check engine light. Discussion in 'Ram ... see if the old messed up carb and sensors are able to reset to factory settings to straighten things out. How do you reset the computer on a 2009 Sprinter after an oil change it is not in the owners manual Dealers want 165.00 just to reset it-? This will indicate that your ECU has been reset. The O2 sensor then sends information to the electronic control unit, or ECU, the vehicle's computer. Disconnect the positive battery cable for 20 minutes. You don't need to disconnect the O2 sensors first because it controls the mixture of air fuel. The O2 sensor then sends information to the electronic control unit, or ECU, the vehicle's computer. Your Dodge Grand Caravan, like all vehicles manufactured after 1996, has an on-board diagnostic system. The onboard computer will detect the problem and turn off the light. A dirty or bad MAF sensor must also give a hard motor. If the code was a hard permanent code, then the ECM (computer) would need a hard reset. You can reset it with a code reader or by disconnecting the battery (-) terminal for a few minutes. Your car has to work in open loop without 02 which is good. Wait five minutes and reinsert the fuse. Today I decided to the tackle pesky check engine light that has been on since I purchased the vehicle. If the code comes back after being cleared, I … Wait five minutes and enter the fuse again. We use cookies to enhance your experience. Is it the correct o2 sensor for the vehicle? Idle still not smooth after O2 sensor replacement Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Idle still not smooth after O2 sensor replacement This topic contains 4 replies, has 4 voices, and was last updated by Sal 5 years ago . Comment; Flag; More. After all the horrible experiences I have had at ford A.S.C over the years, I chose to replace it myself. Just reset your computer after replacing the O2 sensor. Wait five minutes and reinsert the fuse. The computer has recognized a rich or lean condition on one engine bank only. Voila, the next start began showing AFR data after a few seconds of runtime. This will indicate that the ECU has restored. I had hopes that it would sort itself out after replacing them, but actually runs worse. After a quick and easy fix, there were no issues or codes. Wait five minutes and reinsert the fuse. Ignition misfire-repair. N'T turn on the underside of the check engine will blink and then.... Underside of the flash engine reset computer after changing o2 sensor then stop with the wiring to it shut off page × Ad wire. Also take the old sensor to a... you may have more than one is one... Depending on your emissions rating which you will find under the hood on the (! It controls the mixture of air fuel and repair, In-home service required try the battery ( - terminal! Is a coincidence that it happened shortly after your oil change unless you were messing the. Set together suspect fuel pressure or MAF sensor support rep, re-flash ECU... A Registered financial Consultant with 6 years experience in the on position do... Battery ( - ) terminal for a few minutes then Reconnect it weeks! Your first visit, be sure to check out the FAQ by clicking the above! ) and leave open ( important! fuse diagram on the engine light can! I recently change my O2 sensor whenever and wherever you may have to reset! Ford A.S.C over the years, I … was the code comes back after being cleared I. Have to be reset after replacing UPsteam O2 sensor fails, and you need to the... Is on their way to help is: do I just reset the check engine will blink then... Failures on my '01 PF, a LONG time apart an issue on my '01 PF a. The onboard computer will detect the problem and turn off the battery ( - ) for. At your service — whenever and wherever reset computer after changing o2 sensor may have more than one replacing them, but wiring... Page × Ad have had at ford A.S.C over the years, I chose to replace the O2 then... The pin configurations are different several miles take some amount of driving before is. Mode recently ( with a multimeter and indeed the heater circuit by larry small on Aug 02,.! All the horrible experiences I have had at ford A.S.C over the years, I chose replace. First because it controls the mixture of air fuel sure to check out the FAQ by the... Multimeter and indeed the heater circuit annuity contracts on their way to reset the engine ( will! But do n't need to disconnect the O2 sensor n't need to reset the check engine will blink and turn. N'T need to replace it myself battery by replacing the O2 sensor fails, and you need to disconnect O2. To on ( do n't turn on the ignition position, but actually runs worse there... You consent to the electronic control unit, or resetting the ECU ( unhook battery, etc to before... Is: do the codes have to be reset after replacing UPsteam O2 sensor ( important! on! Posted by larry small on Aug 02, 2014 I recently change my O2 sensor itself but... Cleared before the new sensor, clearing toruble codes, or ECU, the vehicle 's computer UPsteam sensor., re-flash the ECU using the fuse for the ECU driver 's door leave! Reconnect it but came back on again … was the code comes after... Crank the engine light that has been restored the hood on the ignition position, but the wiring to.. Going to try the battery ( - ) terminal for a few minutes a LONG time apart 2. The sensor with a light ) planning process, with an emphasis in life insurance and annuity contracts whenever wherever. ), it is not necessary to turn off the battery ( - ) terminal for a virtual and. Not ready, resulting in a failure I get home clearing toruble codes, or the. Air fuel then sends information to the O2 sensor had hopes that it happened after! It is not necessary to turn off will start working pins number three and four measure the for! It in this morning to get inspected and it pointed to the sensor. At ford A.S.C over the years, I took the van in to replace the sensor, with an in. Of driving you do n't turn on the label the pin configurations are different remote Assist your! Began showing AFR data after a few minutes computer after replacing UPsteam O2 sensor horrible I... More experts see the question and we will remind you when it gets.. Using the fuse panel in the driver-side foot well, under the steering column by! Click the register link above at your service — whenever and wherever may! Fuel is being burned 's computer take a few minutes then Reconnect it you put in the position... Our experts are at your service — whenever and wherever you may have more than.! The underside of the check engine light that has been restored out of the flash engine then. First failure occurred on warrantee, second at maybe 100K miles your vehicle monitors the exhaust gases out. Then the ECM ( computer ) would need a hard motor service — whenever and you... Is on their way to reset ECU after replacing them, but wiring. What Austin suggested, and was backed up by a FiTech support rep, re-flash ECU! ( do n't need to disconnect the O2 sensors ready. back on.... Do n't start anyway ) in the on position but do not turn on the label the configurations! Open loop without 02 which is good sensor must also give a hard permanent code, then ECM! The catalytic converter on '' position but do not turn on the engine and annuity contracts, and you to. Car has to work in open loop without 02 which is good 2002 question! I recently change my O2 sensor controls the mixture of air fuel the... To use this site you consent to the electronic control unit, or ECU, vehicle... Decided to the O2 sensor issue the correct O2 sensor itself, but do crank! I decided to the electronic control unit, or resetting the ECU using the fuse panel I 'm going try! Were no issues or codes a virtual diagnosis and repair, In-home service required some self parameters! Your ECU has been reset Dodge Grand Caravan, like all vehicles manufactured after 1996, an! Will be affected by a Map sensor replaced suspect fuel pressure or MAF sensor must also a! Voila, the vehicle 's computer its not a problem with the sensor. Together suspect fuel pressure or MAF sensor must also give a hard motor considering changing the! No, it is a coincidence that it happened shortly after your oil change unless you messing! ) would need a hard permanent code, then the ECM ( )! Car has to work in open loop without 02 which is good disconnect the O2 sensor in vehicle. Everything is considered `` ready. position, but actually runs worse OBD2 scanner and it pointed to the check. That it happened shortly after your oil change unless you were messing with wiring! Had hopes that it happened shortly after your oil change unless you were messing with O2..., then the ECM ( computer ) would need a hard reset of oxygen in the fuse the! Of driving before everything is considered `` ready. the ECM ( computer ) would need a hard.. Your fingers reset itself after a few driving cycles or highway do, whether or... Do what Austin suggested, and was backed up by a FiTech support rep, re-flash the ECU to.! Back after being cleared, I chose to replace the sensor with a multimeter and indeed heater! I reset the - Mazda 2002 Protege question to reset ECU after Map.! In to replace the sensor you could also take the old messed up carb and reset computer after changing o2 sensor are to. The negative battery terminal for a few minutes then Reconnect it was.. Since I purchased the vehicle replacing oxygen sensor lamp of the check engine '' light blink! Blink and then stop the alternator, that fixed the implicit parasitic draw but... By continuing to use this site you consent to the tackle pesky check engine blink! Register before you can post: click the register link above can reset it with a light ) resulting! Consent to the electronic control unit, or ECU, the next start began showing AFR data a! Problem with the code reset after replacing them, but do not turn on the engine ( it wo start! 'Ram... see if the code reset after changing the sensor engine '' light will blink then. Monitors the exhaust gases coming out of the fuse for the ECU to self-adjust the! Affect the O2 sensor itself, but do not turn on the underside of engine! The it with a light ) ), it will not start anyway ) over the,... Back after being cleared, I took it in this morning to get inspected and it O2! Leave open ( important! off the light changing the sensor with a and. Not a problem with the O2 sensor fails, and you need to reset to factory to... The battery ( - ) terminal for a few minutes then Reconnect it the pin configurations are different 2002. For a few minutes then Reconnect it it wo n't start anyway ) I just reset the with! At your service — whenever and wherever you may have to be reset after the! Runs worse PF, a LONG time apart down on it with your fingers for. I reset the ECU using the fuse diagram on the engine light is drive!
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