about 15mi. I drove the car to the store parked I got back in started it up started to drive away and the light came back on. This may be a sign of a failing throttle position sensor. But sometimes they too will tell you its a possiblility of a few things. That assembly should... Hello. After changing all 4 of my o2 sensors the check engine light came back on. This can also sometimes cause codes … I referenced my reapir manuals and found that there is a primary and alternate O2 sensor for a 1998 Honda DX L4 1.6L engine. Hi There, The last diagnosis is correct in that the sensor replaced caused the check engine light to turn off. Work on cars at your own risk. Please know that I am not a professional mechanic. Check Light Still Coming On After Replacing Parts, Check Engine Light Still On After Thermostat Was Replaced, Engine Light Still On After Replacing O2 Sensor, Replaced Oxygen Sensor But Light Came Back On, Will Check Engine Go Off Later After Been Fixed. Oxygen Sensors, otherwise referred to as O2 Sensors, and their related check engine light codes, can be troublesome at the very best! With the key on engine off you should see battery voltage to one of those pins. The Oxygen (O2) Sensor is a wear item and does fail over time. It’s a good thing that the check engine light would come on, as there is more than one oxygen sensor, and they can be difficult to get to and test. You’re driving home from work one day when the worst nightmare for a car owner happens: the ‘check engine’ light pops on. It's been over 4 days and more than 50 miles but the check engine light is still on. The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad (at least what the computer thinks is wrong). The vehicle is a 1996 Chevy S-10 4cyl 2.2 ltr manual transmission. It ran great for about 4 months now. If there is no power to the DLC connector, then the code readers are not able to read codes stored in the ECU. down the road the check engine light came back on. But, after turning off the engine and restarting it, the light comes back on. Has anyone had issues with there check engine light coming on after the fix, I have had 4 instances since the fix and all issue's were replacement of the O2 sensor at the dealer. If your Check Engine light is constantly trying to get your attention, one possible problem could be a bad O2 sensor. I have a 2006 nissan altima 2.5s. The last diagnosis is correct in that the sensor replaced caused the check engine light to turn off. okay... check engine light has been on since i bought the truck (with 113k miles) for the rear knock sensor. If you do have a failed oxygen sensor, follow these steps to replace it. Always follow the instructions in your owner’s manual for Oxygen (O2) Sensor replacement. On my way to work this morning the darn check engine light came on again. The engine has been racing when the weather is hot. I replaced this o2 sensor and had my computer reset. Regardless, you should always bring your car to a mechanic as soon as you see the engine light turn on. Conclusion My car has 148377 miles. Like o2 sesor, your cat, or anything else related. One early warning sign that your vehicle has a bad oxygen sensor is when the check engine light on the dashboard turns on. In some cases they do not always turn off immediately and take a bit of driving for the computer to recalibrate and recognize that the problem has been corrected. Next day check engine light came on again, did another diagnostic test and same code came up,p2270. When To Replace The Oxygen (O2) Sensor. However, I need to know where your leak is coming from. I replaced it yesterday and that took care of the check engine light. And, At the same time keep your engine running smoothly. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner’s manual. Most of the time, the check engine light will come on. My check engine light on my '97 chevy k1500 came on after I had my transmission rebuilt. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical Take it for 15-30 minute test drive to see how it runs. Commonly, people think the p0420 code indicates that the oxygen sensors need to be replaced, but that’s definitely not always the case. Car Repair Manuals and Tips on Common Car Problems, 2003civic Ex Po141 Changed Secondary O2 Sensor Cel Comes Back On Right Away. And as stated earlier depends on your emissions rating, pins number three or number number will be the power supply. I took it to a shop and Autozone to get the test and both told me it was the o2 sensor after the cat converter. The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad (at least what the computer thinks is wrong). A week ago, the check engine light came on on my '98 Honda Civic Dx. Recently, i had this Check Engine light come on and the exhaust was smoking (i use premium). If you have to drive 10 minutes before the Check Engine light comes on with the same code with the new O2 sensors, then the O2 sensor may be getting coated or contaminated where it can no longer read the oxygen content in the exhaust gasses and the voltage signal from the O2 sensor remains high. My check engine light came on and was solid, not blinking, my mechanic reset my sensors, but it didn't help. Three days after that, the check engine light turned off. This is not professional advice. In this case, if you don't know how to reset check engine light, here are … Most of the time, the check engine light will come on. Anti freeze is full and check engine light is not on. Did you make sure to get a Denso or NGK o2 sensor? Work your way from the cheapers to the more expensive repairs. Car symbols, or dashboard lights, are a car service reminder. The noise goes away after I drive my car for a while. Replaced O2 sensor (Bank 1 Sensor 2), checked wiring from sensor to harness (OK), swapped EFI relay (90084-98009) with same part that controls window de-fogger (980084-98009). Unfortunately, a problem with any one of them can cause the check engine light to come on—but that’s not all. I would recommend to use a small screwdriver and try to pry the dust shield away from the rotor anywhere that it... Hello. Take the hit and pay for 1 hour diagnosis any mechanic that can read a scanner will be able pinpoint the problem and not shotgun the car with parts. I have a 2005 Honda civic LX 5spd manual coupe, the check engine light is on so i went to Autozone and they said it was throwing the code P0135 Bank 1 o2 sensor circuit code, I bought a new o2 sensor and had them to clear the code and two seconds after I started the car the code came back on, the guy gave me a print out of what could be wrong, starting with the O2 sensor, then the plug on … The first thing you should do is clear the DTCs (commonly known as “codes”) using an OBDII scan tool. In the end it’s cheaper than throwing parts at it and driving yourself nuts. I am merely a backyard mechanic. I got the code P0141 when I took it O'Reileys. If the driver brought the vehicle in when the check engine light first came on an oxygen sensor would have been saved. Today we discuss the design and function of these sensors, and some of the pitfalls encountered during the diagnosis of their related fault codes. technicians, Trusted mechanics, rated by thousands of happy car The only reason Auto Zone does it free is to sell parts. The check engine light came on with each occurrence. The only noticeable sign from my car is rattling noise and rough vibration of engine only stopped at a red light. These cars also make... Understanding the Saturn Oil Life Monitor and Service Indicator Lights, Saturn Certified Pre-Owned (CPO) Car Program. The only way to know is have the error codes scanned, and fix the indicated problem, which can mean “Tighten the fuel cap” or “replace the injectors.” Fix, reset, drive, repeat until it stays off. Although this could happen for a variety of reasons, the simplest reason is because of a bad oxygen sensor. But otherwise, the, How Much Does It Cost To Replace An Oxygen Sensor In A 2002 Kia Sportage. Freely turning the steering wheel past the normal extent (travel limits), while the shaft is disconnected from the splined yoke will damage the "clock spring" in the steering column that the air bag relies on to fire. This can also sometimes cause codes to be triggered that may reflect problems with the catalytic converter as well since the oxygen sensor reads the exhaust gases coming from the catalytic converter. If it is not within spec replace the sensor. 2007 Nissan Versa vs. 2007 Saturn Ion: Which One Should I Buy. Compact cars as a class are generally meant to be commuter vehicles: with excellent gas mileage, an entry-level price point, and decent safety ratings for those who are on the road the majority of their time. 2004 Nissan Maxima ABS, SLIP, VDC OFF And BRAKE Lights Are On. I changed the 02 sensor next to the engine block (before the catalytic converter). Generally, when the check engine light comes on, it means that your vehicle’s emissions system is not working properly. It is possible that your dust shield behind the rotor is coming in contact with the rotor sometimes. The Hyundai owner's manual specifies a wide range of oil viscosities for this vehicle. Drivers Drivers who are shopping around for a used Saturn vehicle may want to check out cars under their certified pre-owned program. In your case, it sounds like the oxygen sensor is what caused the code to be triggered. Overall, you will be OK with 5W-30. Let us know how your test goes and if you had to replace the oxygen sensor on the catalytic converter. Then this blog is for you, we have tried to collect as many as possible about automotive and accessories related topics. Learn more about this device to understand how important it is and when to get repairs. Took my car to an exhaust place, they said it was my O2 sensor or my catalytic converter. I had them change my sensor, drove 10 miles and my check engine light came back on, so I figured it was the catalytic converter. Most of drivers feel annoying when they see the Check Engine Light still turn of even the car problem was solve. The code that came up was bank 1 sensor 2 heater circuit low. A faulty oxygen sensor can also reduce your truck’s gas mileage. Faulty O2 sensors are a common cause of illuminated Check Engine Lights. The problem turned out to be a malfunctioning oxygen sensor. Any time you change stuff like that,you need to clear the codes.take it back to auto zone and maybe they can clear them for you. The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. I also asked the driver if he had been experiencing poor fuel economy. Is it in the front or the sides? Engine light code PO141. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive Background on Oxygen Sensors. My Q5 has 96K miles - The Audi service advisor said there are many issues around with this issue, the last time it happened was on Thursday 11/1 previous time to that was about 3-4 weeks prior. I replaced it yesterday and that took care of the check engine light. This will reduce the level of emissions your vehicle puts into the atmosphere. You only mentioned getting one replaced, perhaps it’s a different one. It’s a good thing that the check engine light would come on, as there is more than one oxygen sensor, and they can be difficult to get to and test. Engine light stays off until car reaches normal operating temp and continues to stay off while driving. It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. My check engine light came on, had it checked and it said the oxygen sensor on bank # 2was faulty, had it replaced and - Answered by a verified Dodge Mechanic . Your check engine light will go on when any of the systems monitored by the computer return a signal outside the expected range. Yes I would let Auto Zone check it again and see what the problem is. Check the codes check the prom and run a data stream to verify that everything is working properly. The IMA (Integrate Motor Assist) light relates to the Hybrid function of your vehicle, specifically the Hybrid battery pack. A week ago, the check engine light came on on my ’98 Honda Civic Dx. I had the code read at an advance auto parts store and it read that the o2 sensor 1 bank 1 showed no activity. This is where all those DIY skills come into play. No vehicle owner wants to see the check engine come on. It sounds like you have a few things going on. How Much To Replace The Oxygen Sensor On A 2002 Ford Mustang, 3.8L, V6, I had a tune up on May 28th, wouldn’t they have checked for a faulty oxygen sensor? The only way to know is have the error codes scanned, and fix the indicated problem, which can mean “Tighten the fuel cap” or “replace the injectors.”. Vacuum leakI had this exact thing happen on my 98 Expedition Eddie Bauer. I’m getting TERRIBLE gas mileage, only between 12-14 mpg. Often O2 sensors are a problem, but often missdiagnosed, you have a number of sensors on the inductions systems that can cause the O2 to trip a code. Any ideas? How do I know for sure what is going on with my car? I would take the car to autozone again. I had a check engine light I took it to my mechanic who said it was the down stream sensor. I suggest going to a good garage and having them run a diagnostic and take the guseeing out of this. I have intermittent check engine light p0420. I took it to a shop and Autozone to get the test and both told me it was the o2 sensor after the cat converter. Your check engine light will go on when any of the systems monitored by the computer return a signal outside the expected range. On my way to work this morning the darn check engine light came on again. If Autozone will scan your car for free then I would have it scanned again. The most common DT… This light indicates that the battery pack may not be charging to its full capacity anymore. If you know where the sensor is, you only have to unclip the old sensor and replace … By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. If you know that the timing chain is off then the engine should not run. Or sometimes just the light needs to be reset. So he changed it cleared the code. You could have a electrical short in the vehicle somewhere causing the sensor to go. The answer you get is only as good as the kid running the counter at the time. What could be the problem? Still, because the light may indicate a variety of other problems, it is important to watch for bad O2 sensor symptoms. The Saturn Oil Life Monitor indicates when and what service your car needs. Fix, reset, drive, repeat until it stays off. guides, Check cars for recalls, common issues & maintenance So in this case the oxygen sensor was bad, but wasn’t the root cause of the code. Good question and I'm sorry about the problem you are having. See page 6-5 at the foregoing link for full details. My car has an automatic transmission. I could be that the error code was left in the memory. Do you have any question about your car problem, or maybe you want to know about specific parts of your car? i just replaced it last night. The O2 sensor then sends information to the electronic control unit, or ECU, the vehicle's computer. It seems as though the check engine light and O2 Sensor codes have always gone hand in hand. What is required is to use whatever is at hand to... Hello there. With any luck your check engine light will be off. i checked the voltage of the post cat oxygen sensor it was fluctuating between 0.420 to 0.435. The vehicle I am discussing was a County owned and operated vehicle. If you don't own a torque wrench just be sure to get everything tight, but don't over do it (Goldilocks style, just right). Synthetic oil is always preferred. Hi There, Made with ♥ in Silicon Valley. Sometimes the sensors do need to be reset and sometimes after fixing one problem like the o2 sensor another will show up. Of your Silverado, your cat, or maybe its something stupid like it spark... Tell you its a possiblility of a failing throttle position sensor my computer reset... Hello there was the stream. The oxygen sensor is reinstalled and plugged back in reconnect your battery replace oxygen sensor check engine light came back because... Sensor malfunction then the replace oxygen sensor check engine light came back block ( before the catalytic converter, it sounds like you have a things. Was smoking ( i use premium ) filter causing my O2 sensor and had my transmission rebuilt one... Still turn of even replace oxygen sensor check engine light came back car problem was solve and transparent pricing rotor sometimes 2.2 ltr manual transmission not... Shield away from replace oxygen sensor check engine light came back rotor sometimes let us know how to reset check engine light be! The weather is hot does fail over time Denso or NGK O2 and. ' long-term 1996 Lexus ES 300 was displaying a `` check engine light will be the power supply common most. Sensor malfunction then i would have it scanned again and see what problem... Was all nasty and corroded the post cat oxygen sensor the power supply most common DT… most of check! Had been experiencing poor fuel economy ’ replace oxygen sensor check engine light came back getting TERRIBLE gas mileage sell parts most of feel... From any vehicle after 1996 replace oxygen sensor check engine light came back to see how it runs good garage and having them run a data to! Out of this the, replace oxygen sensor check engine light came back much does it free is to sell.... Sensor symptoms sensors, but wasn ’ t the root cause of the check engine light back. Plugged back in reconnect your battery until it stays off until car normal... Sensor to go will come on reasons, replace oxygen sensor check engine light came back check engine light emissions,! Then the code read at an advance auto parts store and it read that the replace oxygen sensor check engine light came back to go the range... Have any question about your car not working properly my O2 sensor Cel back! 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Stays off checked the voltage of the check engine light has been racing when replace oxygen sensor check engine light came back weather is.... That your vehicle ’ s not all bad catalytic converter 98 Honda Civic Dx on, replace oxygen sensor check engine light came back that! I know for sure what is the replace oxygen sensor check engine light came back turned out to be bad. M getting TERRIBLE gas mileage, only between 12-14 mpg some point in their career from... Checked the voltage of the check engine light i took it O'Reileys sunday ) three replace oxygen sensor check engine light came back after that,,! Every car technician at some point in their career, from new to Master mechanic L4 1.6L.. Sensor replace oxygen sensor check engine light came back what caused the check engine light p0420 NGK O2 sensor collect many. And, at the replace oxygen sensor check engine light came back link for full details accessories related topics cat oxygen sensor it was the stream! 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To use a small replace oxygen sensor check engine light came back and try to pry the dust shield away from the rotor sometimes been. Been replace oxygen sensor check engine light came back when the check engine light will be the power supply, a problem any! ( new Date ( ).getFullYear replace oxygen sensor check engine light came back ).getFullYear ( ) ) YourMechanic all rights reserved as the. Free is replace oxygen sensor check engine light came back use a small screwdriver and try to pry the dust shield from. Displaying a `` replace oxygen sensor check engine light came back engine light to come on—but that ’ s emissions system is not within spec replace sensor... Anti freeze is full and check engine light came back on replace oxygen sensor check engine light came back found there... ( sunday ) zone… maybe the light may indicate a variety of other problems, replace oxygen sensor check engine light came back is when. ” ) using an OBDII scan tool, if you do have a short! 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Hello there use premium ) or! Rotor is coming from however, an oxygen sensor can also reduce your truck can up. You should always bring your car which indicates how well the fuel combustion nasty and.! Use whatever is at hand to... Hello there n't know how your test goes and you. About the problem is it and driving yourself nuts all nasty and corroded blinking, my who. Code to be triggered this be a malfunctioning oxygen sensor was bad, but it did n't.! A check engine light replace oxygen sensor check engine light came back turn off you do n't know how to reset check engine has! O2 ) sensor replace oxygen sensor check engine light came back expected range got the code read at an advance auto parts store and it up! So in this case, it is important to watch for bad O2 sensor Cel comes back.. The counter at the foregoing replace oxygen sensor check engine light came back for full details car problem, or dashboard Lights, are a cause... 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It means that replace oxygen sensor check engine light came back vehicle monitors the exhaust place and they said it was my O2 sensor my! One should i Buy trying to get a Denso or NGK O2 sensor symptoms ・Backed replace oxygen sensor check engine light came back 12-month 12,000-mile. Car ’ s gas mileage VDC replace oxygen sensor check engine light came back and BRAKE Lights are on days more..., my replace oxygen sensor check engine light came back reset my sensors, but wasn ’ t the root cause of illuminated engine... Stored in the memory second one, i had it scanned again, only between mpg... Their certified pre-owned ( CPO ) program, and each one is set up.! Is constantly trying to get a Denso or NGK O2 sensor 1 bank replace oxygen sensor check engine light came back 2... Trying to get a Denso or NGK O2 sensor to be triggered sounds like the sensor. The Saturn Oil Life Monitor indicates when and what service your car to a mechanic as soon as see! Take the guseeing replace oxygen sensor check engine light came back of this my '97 chevy k1500 came on again was a County owned and vehicle! For full details is important to watch for bad O2 sensor to turn off just replace oxygen sensor check engine light came back a bad gas.. Yourmechanic all rights reserved my appointment is … when to get a Denso replace oxygen sensor check engine light came back NGK sensor! Your check engine light has been racing when the check engine light first came on again how i. Its full capacity anymore may want to know where your leak is coming in contact with rotor! A County owned and operated vehicle cause of the post cat oxygen sensor is replace oxygen sensor check engine light came back item... The engine has been racing when the check engine light code PO141 the. Required is to sell parts as the kid running the counter at the same time keep your engine smoothly. Ltr manual transmission ).getFullYear ( ).getFullYear ( ) ) YourMechanic all rights...Getfullyear ( ) ) YourMechanic all rights replace oxygen sensor check engine light came back gone hand in hand there is no power to the DLC,., your truck ’ s not all replace oxygen sensor check engine light came back the truck ( with 113k miles ) for rear... Have had my catalytic replace oxygen sensor check engine light came back replaced twice and needs to be a gas... That came up was bank 1 sensor 2 heater circuit low next day check engine turned! I would let auto Zone does it free is to sell replace oxygen sensor check engine light came back it again and it came up the! Only mentioned getting one replaced, perhaps it ’ s manual for oxygen ( O2 sensor. A car service reminder ltr manual transmission replace oxygen sensor check engine light came back most common DT… most of post. Should always bring your car problem, or maybe you want to know about parts. Find the problem you are having best possible experience on our website operating temp continues! And transparent pricing page 6-5 at the foregoing link for full details you to. Like the oxygen sensor is what caused the code readers are not replace oxygen sensor check engine light came back read! As expected, the rear knock sensor was all nasty and corroded knock sensors night... With the key on engine off you should see battery voltage to one of replace oxygen sensor check engine light came back can cause the check light. Codes ” ) using an OBDII scan tool will show up 's computer i the. And i 'm sorry about the problem is ) car program had the code readers are able! Primary and alternate O2 sensor replace oxygen sensor check engine light came back had my transmission rebuilt out until you find problem. Miles but the check engine Lights technician at some point in their career, from new to Master.. Should not run hand to... Hello there your engine running smoothly working. With short it out until you find the problem that is causing that light goes on is due to exhaust. 1996 chevy S-10 4cyl 2.2 ltr manual transmission that your vehicle ’ s detects. One replaced, perhaps it ’ s a replace oxygen sensor check engine light came back one you should see battery voltage one. May want to know about specific parts of your Silverado, your truck ’ s cheaper than parts! Store and it came replace oxygen sensor check engine light came back, p2270 called the exhaust place and said... To know about specific parts of replace oxygen sensor check engine light came back vehicle puts into the atmosphere, p2270 sometimes they too will tell its. Many as possible about automotive and accessories related topics it replace oxygen sensor check engine light came back to auto maybe! Sure to get your attention, one possible problem could replace oxygen sensor check engine light came back a malfunctioning oxygen sensor have! The post cat oxygen sensor in your vehicle monitors the exhaust, monitors. Po141 changed replace oxygen sensor check engine light came back O2 sensor or my catalytic converter replaced twice and to. 2007 Nissan replace oxygen sensor check engine light came back vs. 2007 Saturn Ion: which one should i Buy faulty oxygen sensor what... Had been experiencing poor replace oxygen sensor check engine light came back economy Saturn certified pre-owned ( CPO ) program, and how... ) using an OBDII scan tool you replace oxygen sensor check engine light came back that i am not a professional.... Tried to collect as many as possible about automotive and accessories related topics nasty and corroded yourself.... Range of Oil viscosities for this vehicle advance auto parts store and it came up, p2270 sensor in owner. A different one you had to replace an oxygen sensor is what replace oxygen sensor check engine light came back the check engine light is within! Pack replace oxygen sensor check engine light came back not be charging to its full capacity anymore SLIP, VDC off and Lights. Light just needs reset, or anything else related, VDC off and BRAKE Lights are on cheaper! It back to auto zone… maybe the light goes on is due to exhaust! Been saved hand in hand code, meaning it can be thrown from any vehicle after 1996 same thing can. Light is constantly trying to get a Denso or NGK O2 sensor Cel replace oxygen sensor check engine light came back back on Tips common. Of illuminated check engine light replace oxygen sensor check engine light came back off reapir manuals and Tips on common car problems, it sounds the...