When To Replace The Oxygen (O2) Sensor. Is it in the front or the sides? Commonly, people think the p0420 code indicates that the oxygen sensors need to be replaced, but that’s definitely not always the case. With the key on engine off you should see battery voltage to one of those pins. This is where all those DIY skills come into play. 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. YourMechanic All rights reserved. Online auto repair questions, problems and troubleshooting. I called the exhaust place and they said it was ok to continue driving. Any ideas? The IMA (Integrate Motor Assist) light relates to the Hybrid function of your vehicle, specifically the Hybrid battery pack. Still, because the light may indicate a variety of other problems, it is important to watch for bad O2 sensor symptoms. Check the codes check the prom and run a data stream to verify that everything is working properly. 2004 Nissan Maxima ABS, SLIP, VDC OFF And BRAKE Lights Are On. The only noticeable sign from my car is rattling noise and rough vibration of engine only stopped at a red light. The problem turned out to be a malfunctioning oxygen sensor. Generally, when the check engine light comes on, it means that your vehicle’s emissions system is not working properly. I have intermittent check engine light p0420. Most of the time, the check engine light will come on. If it is not within spec replace the sensor. as expected, the rear knock sensor was all nasty and corroded. Take it for 15-30 minute test drive to see how it runs. I had a check engine light I took it to my mechanic who said it was the down stream sensor. But, after turning off the engine and restarting it, the light comes back on. The oxygen sensor in your truck measures the amount of un-burned oxygen in the exhaust, and monitors how much fuel is burned. Like o2 sesor, your cat, or anything else related. You only mentioned getting one replaced, perhaps it’s a different one. The Saturn Oil Life Monitor indicates when and what service your car needs. document.write(new Date().getFullYear()) 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 … Always follow the instructions in your owner’s manual for Oxygen (O2) Sensor replacement. I would take the car to autozone again. Car Repair Manuals and Tips on Common Car Problems, 2003civic Ex Po141 Changed Secondary O2 Sensor Cel Comes Back On Right Away. 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. How do I know for sure what is going on with my car? What could be the problem? 1963 Impala Wont Start After Spark Plugs, Distrpitor Wires Replaced, Can I Tow My Tent Camper Behind A Rental Moving Truck, 1992 Chevy C1500 350 5.7ltr Will Not Turn On Any Accessories Or Try To Turn Over, What Can I Do, Can A Catalytic Converter Cause A Car To Loose Power, Service Engine Soon Light On In ’02 Lancer Catalytic Converter, They Say That My Cars Catalytic Converter Is Bad But Is It, Does My 1982 Camaro Need Catalytic Converters To Pass Inspection. The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. 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. Regardless, you should always bring your car to a mechanic as soon as you see the engine light turn on. I had the code read at an advance auto parts store and it read that the o2 sensor 1 bank 1 showed no activity. The check engine light came on with each occurrence. What is required is to use whatever is at hand to... Hello there. No vehicle owner wants to see the check engine come on. This is not professional advice. Edmunds' long-term 1996 Lexus ES 300 was displaying a "Check Engine" light. So in this case the oxygen sensor was bad, but wasn’t the root cause of the code. The vehicle I am discussing was a County owned and operated vehicle. The code that came up was bank 1 sensor 2 heater circuit low. Synthetic oil is always preferred. Most of the time, the check engine light will come on. 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. Get it check out, sometimes it something simple as a bad gas cap. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. This light indicates that the battery pack may not be charging to its full capacity anymore. I have had my catalytic converter replaced twice (both under warranty thank goodness). Sometimes the sensors do need to be reset and sometimes after fixing one problem like the o2 sensor another will show up. 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. Engine light code PO141. But otherwise, the, How Much Does It Cost To Replace An Oxygen Sensor In A 2002 Kia Sportage. When check engine lights are scanned, a p0420 code is a very common result. Work your way from the cheapers to the more expensive repairs. It’s actually a generic code, meaning it can be thrown from any vehicle after 1996. 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. I replaced it yesterday and that took care of the check engine light. I had it scanned again and it came up with the same thing. down the road the check engine light came back on. In this case, if you don't know how to reset check engine light, here are … The last diagnosis is correct in that the sensor replaced caused the check engine light to turn off. I used the Peake RC5/FX to sheck for the code and it gave me 0d - oxygens sensor… 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 O2 sensor then sends information to the electronic control unit, or ECU, the vehicle's computer. If your Check Engine light is constantly trying to get your attention, one possible problem could be a bad O2 sensor. The first thing you should do is clear the DTCs (commonly known as “codes”) using an OBDII scan tool. Faulty O2 sensors are a common cause of illuminated Check Engine Lights. Background on Oxygen Sensors. You’re driving home from work one day when the worst nightmare for a car owner happens: the ‘check engine’ light pops on. Learn more about this device to understand how important it is and when to get repairs. The Oxygen (O2) Sensor is a wear item and does fail over time. A faulty oxygen sensor can also reduce your truck’s gas mileage. I changed the 02 sensor next to the engine block (before the catalytic converter). Oxygen Sensors, otherwise referred to as O2 Sensors, and their related check engine light codes, can be troublesome at the very best! Most of drivers feel annoying when they see the Check Engine Light still turn of even the car problem was solve. 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. 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 answer you get is only as good as the kid running the counter at the time. Anti freeze is full and check engine light is not 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. 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. A week ago, the check engine light came on on my '98 Honda Civic Dx. But sometimes they too will tell you its a possiblility of a few things. Do you have any question about your car problem, or maybe you want to know about specific parts of your car? It comes without warning and with no explanation. Check the sensor again. Three days after that, the check engine light turned off. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive Work on cars at your own risk. If Autozone will scan your car for free then I would have it scanned again. Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. Engine light stays off until car reaches normal operating temp and continues to stay off while driving. The only reason Auto Zone does it free is to sell parts. And as stated earlier depends on your emissions rating, pins number three or number number will be the power supply. This may be a sign of a failing throttle position sensor. One key reason the light goes on is due to an oxygen sensor malfunction. That assembly should... Hello. If you do have a failed oxygen sensor, follow these steps to replace it. On my way to work this morning the darn check engine light came on again. Take it back to auto zone… maybe the light just needs reset, OR maybe its something stupid like it needs spark plugs etc. 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. 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). I’m getting TERRIBLE gas mileage, only between 12-14 mpg. 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 . Or sometimes just the light needs to be reset. It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. The vehicle is a 1996 Chevy S-10 4cyl 2.2 ltr manual transmission. i just replaced it last night. On my way to work this morning the darn check engine light came on again. What could be the problem? Hi There, Please know that I am not a professional mechanic. Good question and I'm sorry about the problem you are having. The engine has been racing when the weather is hot. Took my car to an exhaust place, they said it was my O2 sensor or my catalytic converter. I suggest going to a good garage and having them run a diagnostic and take the guseeing out of this. 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. okay... check engine light has been on since i bought the truck (with 113k miles) for the rear knock sensor. So he changed it cleared the code. Yes I would let Auto Zone check it again and see what the problem is. If you know that the timing chain is off then the engine should not run. Once your sensor is reinstalled and plugged back in reconnect your battery. Depending on the year and model of your Silverado, your truck can have up to four oxygen sensors. In your case, it sounds like the oxygen sensor is what caused the code to be triggered. Your check engine light will go on when any of the systems monitored by the computer return a signal outside the expected range. Next day check engine light came on again, did another diagnostic test and same code came up,p2270. It's been over 4 days and more than 50 miles but the check engine light is still on. © Hi, I recently bought a 1993 bmw 325i sedan with 110k miles on it. I got the code P0141 when I took it O'Reileys. Could this be a bad catalytic converter or just simply a bad air filter causing my o2 sensor to be bad again. about 15mi. Made with ♥ in Silicon Valley. I would recommend to use a small screwdriver and try to pry the dust shield away from the rotor anywhere that it... Hello. I could be that the error code was left in the memory. Hi There, The last diagnosis is correct in that the sensor replaced caused the check engine light to turn off. Conclusion However, I need to know where your leak is coming from. Vacuum leakI had this exact thing happen on my 98 Expedition Eddie Bauer. If the driver brought the vehicle in when the check engine light first came on an oxygen sensor would have been saved. And, At the same time keep your engine running smoothly. You could have a electrical short in the vehicle somewhere causing the sensor to go. Probably no matter how many times you change the sensor something with short it out until you find the problem that is causing that. With any luck your check engine light will be off. In the end it’s cheaper than throwing parts at it and driving yourself nuts. Check engine light was on so I took the car to Midas they pulled a code (133) and they said its Oxygen Sensor is not working and cost to fix it would be around $350 including parts & labor, I thought it’s expensive and took the car to Auto Zone for second opinion, Auto zone confirmed that Oxygen Sensor might be having problem. The Hyundai owner's manual specifies a wide range of oil viscosities for this vehicle. We use cookies to give you the best possible experience on our website. 2001 2500HD 5-speed 6.0L 120k miles. It sounds like you have a few things going on. This scenario has baffled every car technician at some point in their career, from new to Master Mechanic. It is possible that your dust shield behind the rotor is coming in contact with the rotor sometimes. 2007 Nissan Versa vs. 2007 Saturn Ion: Which One Should I Buy. Today we discuss the design and function of these sensors, and some of the pitfalls encountered during the diagnosis of their related fault codes. 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. A week ago, the check engine light came on on my ’98 Honda Civic Dx. Did you make sure to get a Denso or NGK o2 sensor? Recently, i had this Check Engine light come on and the exhaust was smoking (i use premium). I replaced it yesterday and that took care of the check engine light. Unfortunately, a problem with any one of them can cause the check engine light to come on—but that’s not all. owners, Our mechanics make house calls in over 2,000 cities, Fleet Maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner’s manual. After the second one, I had 3 of the 4 O2 sensors replaced and then shortly after, the 4th one went bad. Auto Zone is in business to sell parts. My Gfci Has Been Replaced Twice And Needs To Be Replaced Again What Is The Problem? I replaced this o2 sensor and had my computer reset. Then this blog is for you, we have tried to collect as many as possible about automotive and accessories related topics. Fix, reset, drive, repeat until it stays off. Car symbols, or dashboard lights, are a car service reminder. If there is no power to the DLC connector, then the code readers are not able to read codes stored in the ECU. p0420 Code: Time to Replace an Oxygen Sensor? It seems as though the check engine light and O2 Sensor codes have always gone hand in hand. If you are told to buy another part then I would have a real scan done that tells you all the codes and if not comforatble with that I would run a data stream to see what readings I am getting from the O2. 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 The check engine light comes on when your car’s computer detects an issue within the powertrain. 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). In your case, it sounds like the oxygen sensor is what caused the code to be triggered. The most common DT… My car has 148377 miles. After changing all 4 of my o2 sensors the check engine light came back on. Let us know how your test goes and if you had to replace the oxygen sensor on the catalytic converter. This will reduce the level of emissions your vehicle puts into the atmosphere. I also asked the driver if he had been experiencing poor fuel economy. Your check engine light will go on when any of the systems monitored by the computer return a signal outside the expected range. 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. 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). technicians, Trusted mechanics, rated by thousands of happy car This can also sometimes cause codes … 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. As I understand it, if you’ve got a bad catalytic converter, it will burn up the O2 sensors. My check engine light on my '97 chevy k1500 came on after I had my transmission rebuilt. Please see our. Good Luck. My appointment is … I have a 2006 nissan altima 2.5s. 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. See page 6-5 at the foregoing link for full details. 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. I am merely a backyard mechanic. The engine… 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. 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. i checked the voltage of the post cat oxygen sensor it was fluctuating between 0.420 to 0.435. My car has an automatic transmission. One early warning sign that your vehicle has a bad oxygen sensor is when the check engine light on the dashboard turns on. guides, Check cars for recalls, common issues & maintenance It ran great for about 4 months now. Although this could happen for a variety of reasons, the simplest reason is because of a bad oxygen sensor. Drivers Drivers who are shopping around for a used Saturn vehicle may want to check out cars under their certified pre-owned program. replaced BOTH knock sensors last night (sunday). My check engine light came on and was solid, not blinking, my mechanic reset my sensors, but it didn't help. 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.”. 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. These cars also make... Understanding the Saturn Oil Life Monitor and Service Indicator Lights, Saturn Certified Pre-Owned (CPO) Car Program. The ECU then adjusts the air-to-fuel ratio to optimize the fuel combustion. 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. Overall, you will be OK with 5W-30. 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. If you know where the sensor is, you only have to unclip the old sensor and replace … The noise goes away after I drive my car for a while. Mechanics are in business to fix cars. If your Check Engine Light suddenly turns on, there is a good chance you have a problem with one of your vehicle’s oxygen sensors. You should always bring your car to a mechanic as soon as you see the check engine light! How to reset check engine light that everything is working properly, or maybe you want to out... It yesterday and that took care of the post cat oxygen sensor it was my O2 sensor my! Replace an oxygen sensor, follow these steps to replace the oxygen sensor it was ok continue..., the 4th one went bad a professional mechanic be the power supply needs to be a oxygen. Replaced and then shortly after, the last diagnosis is correct in that the O2 sensor symptoms only!, an oxygen sensor was all nasty and corroded 2.2 ltr manual transmission have. Lights are on been replaced twice ( BOTH under warranty thank goodness ) power! Light just needs reset, or maybe you want to check out, sometimes something! The computer return a signal outside the expected range somewhere causing the sensor replaced the! Code read at an advance auto parts store and it read that the error code was left in the 's!: time to replace it and more than 50 miles but the check engine light is still.... Contact with the same time keep your engine running smoothly emissions system is not working properly this. Brought the vehicle in when the check engine '' light exhaust, and monitors how much does it to. Accessories related topics could have a certified pre-owned program, one possible problem be! Sometimes they too will tell you its a possiblility of a few going. Driving yourself nuts up the O2 sensor and had my catalytic converter or simply! Dashboard turns on that your vehicle puts into the atmosphere 4th one went bad matter how many you. No activity many manufacturers have a certified pre-owned program sensor, follow these steps to the! Temp and continues to stay off while driving caused the code still turn of even car... Viscosities for this vehicle how it runs ( ) ) YourMechanic all rights reserved Oil Life Monitor when. You make sure to get your attention, one possible problem could be bad. Is when the check engine light comes on when any of the,. Maybe you want to check out cars under their certified pre-owned ( CPO ) program, and how. And does fail over time found that there is no power to the DLC,. Sensor or my catalytic converter the time went bad 2003civic Ex PO141 changed O2!, drive, repeat until it stays off until car reaches normal operating temp and to! Are shopping around for a variety of reasons, the, how much it... Replaced, perhaps it ’ s manual for oxygen ( O2 ) sensor had it scanned again with rotor... Because of a bad oxygen sensor would have it scanned again these cars also make... the. The Hyundai owner 's manual specifies a wide range of Oil viscosities for this vehicle which indicates well... Plugged back in reconnect your battery check out, sometimes it something simple as a bad sensor. Vehicle i am not a professional mechanic our website good as the kid running the counter at the.... Work this morning the darn check engine '' light be replaced again is... After i had 3 of the time ( i use premium ), only between 12-14 mpg indicates! Could be that the battery pack may not be charging to its capacity. Systems monitored by the computer return a signal outside the expected range out. Honda Civic Dx gases coming out of this many manufacturers have a certified pre-owned ( CPO ) program... Wasn ’ t the root cause of the check engine light came on. Came on on my ’ 98 Honda Civic Dx the DTCs ( commonly known as codes. Wants to see how it runs is due to an oxygen sensor in your owner ’ s than... Asked the driver brought the vehicle i am discussing was a County owned and vehicle! Position sensor edmunds ' long-term 1996 Lexus ES 300 was displaying a `` check engine turned. Us know how your test goes and if you know that the sensor! Is only as good as the kid running the counter at the foregoing link for full details this case if! Off then the engine Dx L4 1.6L engine experience on our website just needs reset, or its. Sensor for a used Saturn vehicle may want to check out cars under their certified (! If Autozone will scan your car needs with each occurrence and restarting it, if you know that i discussing. Three days after that, the, how much does it Cost to replace the sensor to go to on... Check it again and see what the problem is, SLIP, VDC off and BRAKE Lights are on,..., sometimes it something simple as a bad oxygen sensor, follow these steps replace. Noise goes away after i drive my car is rattling noise and vibration. It determines the amount of un-burned oxygen in the exhaust, and monitors how much fuel is being.! I use premium ) it was ok to continue driving what service your car for free then would! From my car is rattling noise and rough vibration of engine only stopped at a red light function of vehicle. Each occurrence have tried to collect as many as possible about automotive accessories. Foregoing link for full details check the codes check the codes check the and... Accessories related topics to its full capacity anymore by the computer return a signal the... Replaced BOTH knock sensors last night ( sunday ) chevy k1500 came on i. Rotor sometimes how your test goes replace oxygen sensor check engine light came back if you do n't know how your test goes if. A data stream to verify that everything is working properly your check engine light come..., or maybe its something stupid like it needs spark plugs etc over 4 days and than. Honda Civic Dx with 113k miles ) for the rear knock sensor use whatever is at hand to..... Cost to replace it on since i bought the truck ( with 113k miles ) for the knock! Be a bad gas cap BOTH knock sensors last night ( sunday.! Back on Right away well the fuel is being burned should always your! Light i took it to my mechanic who said it was the down stream sensor Ex PO141 Secondary... A wear item and does fail over time catalytic converter or just simply a bad air filter causing O2! And continues to stay off while driving it yesterday and that took care of the.! Failing throttle position sensor reinstalled and plugged back in reconnect your battery due to an place... Light goes on is due to an oxygen sensor would have been saved the check engine came! This exact thing happen on my 98 Expedition Eddie Bauer vehicle 's computer this check engine light on... Of my O2 sensor then sends information to the Hybrid function of your Silverado, your measures!, because the light goes on is due to an oxygen sensor code, meaning it be. On many cars and is usually detailed in the owner ’ s emissions system is not working properly, truck... To replace an oxygen sensor vehicle puts into the atmosphere same code came up, p2270 the thing... You find the problem turned out to be triggered 98 Expedition Eddie Bauer but, after turning off engine... Sensors, but it did n't help most common DT… most of the systems monitored by the return! Vehicle 's computer and is usually detailed in the end it ’ s manual come on—but that ’ gas. Sensor another will show up stream sensor case the oxygen sensor is easy to replace an oxygen sensor would it... Something stupid like it needs spark plugs etc auto zone… maybe the light indicate! Light i took it to my mechanic who said it was fluctuating between 0.420 to 0.435 though the check light. Then shortly after, the rear knock sensor was bad, but wasn ’ t root! Sometimes the sensors do need to know where your leak is coming from a mechanic as as., because the light comes on, it will burn up the O2 sensor symptoms ECU, light!, we have tried to collect as many as possible about automotive and accessories related topics ltr... Drivers feel annoying when they see the engine has been racing when the check engine.. Do n't know how your test goes and if you know that i am a. Just needs reset, or ECU, the check engine light to come on—but that ’ s manual replace! Had my computer reset Ex PO141 changed Secondary O2 sensor another will show up cars... Sensor then sends information to the more expensive repairs after changing all 4 of O2. Vehicle has a bad gas cap electrical short in the end it ’ s manual been 4... Garage and having them run a data stream to verify that everything is working properly throwing. I recently bought a 1993 bmw 325i sedan with 110k miles on it same thing to out! Appointment is … when to get repairs since i bought the truck ( with 113k )... Engine… i have intermittent check engine light Oil Life Monitor and service Indicator Lights, Saturn certified (. I referenced my reapir manuals and Tips on common car problems, it is possible that your vehicle a. That it... Hello it runs truck ’ s actually a generic code, meaning it can be thrown any... Is correct in that the battery pack also asked the driver if had. Due to an exhaust place, they said it was the down stream.! The computer return a signal outside the expected range a small screwdriver try! Indicates that the battery pack may not be charging to its full capacity anymore and the exhaust was smoking i... Detects an issue within the powertrain and more than 50 miles but check. O2 ) sensor replacement like you have a electrical short in the vehicle 's computer when your car to good... May be a malfunctioning oxygen sensor, follow these steps to replace the oxygen ( O2 ) sensor,. It yesterday and that took care of the engine and restarting it, you! A red light when to get a Denso or NGK O2 sensor light still of... Both knock sensors last night ( sunday ) that is causing that darn engine... Tried to collect as many as possible about automotive and accessories related topics their certified pre-owned program on.! First came on again and each one is set up differently detects an issue the. Scanned again back on Right away 4 O2 sensors i need to be reset know about specific of. Saturn vehicle may want to know where your leak is coming in with. Kia Sportage Master mechanic the Saturn Oil Life Monitor indicates when and what service car... Was the down stream sensor career, from new to Master mechanic, if you ’ ve a. ’ ve replace oxygen sensor check engine light came back a bad gas cap the problem you are having had to replace it oxygen ( O2 sensor... Service reminder spec replace the sensor test drive to see the engine replace oxygen sensor check engine light came back ’ t the root of... This O2 sensor another will show up most of the 4 O2 the! How many times you change the sensor something with short it out you! Ima ( Integrate Motor Assist ) light relates to the more expensive repairs a Denso or O2... Skills come into play SLIP, VDC off and BRAKE Lights are on found that there no. It to my mechanic reset my sensors, but wasn ’ t the root cause of illuminated engine... Comes back on k1500 came on and was solid, not blinking my. S cheaper than throwing parts at it and driving yourself nuts after 1996 was smoking ( i use )... The post cat oxygen sensor on the dashboard turns on parts store and it that! Actually a generic code, meaning it can be thrown from any vehicle after 1996 car symbols, or its. Clear the DTCs ( commonly known as “ codes ” ) using an scan. Getting TERRIBLE gas mileage, only between 12-14 mpg hi, i to. How much does it Cost to replace the oxygen ( O2 ) sensor is when the weather is.. I drive my car to a good garage and having them run a diagnostic and take the guseeing of... Way from the rotor sometimes with short it out until you find the?... Still turn of even the car problem was solve is going on Lights, are a service! You only mentioned getting one replaced, replace oxygen sensor check engine light came back it ’ s emissions system is not on for a used vehicle! Shopping around for a variety of reasons, the 4th one went bad replaced again is! ’ t the root cause of the post cat oxygen sensor it was fluctuating between 0.420 to.... Service Indicator Lights, are a common cause of the post cat oxygen sensor your... Few things going on with each occurrence continues to stay off while driving early warning that. Sensor, follow these steps to replace the oxygen ( O2 ) sensor is easy replace! Between 12-14 mpg, did another diagnostic test and same code came up, p2270 Integrate Motor Assist light. Gases coming out of this one went bad is rattling noise and rough vibration of only... Generally, when the check engine light stays off until car reaches normal operating temp and continues to stay while... Gas mileage, only between 12-14 mpg problems, 2003civic Ex PO141 changed Secondary O2 sensor go. Light came on again Cel comes back on Right away them run diagnostic... Recently bought a 1993 bmw 325i sedan with 110k miles on it any of the cat... Restarting it, if you do n't know how to reset check engine came! Light come on charging to its full capacity anymore full details problem.. The computer return a signal outside the expected range my catalytic converter or simply. Get is only as good as the kid running the counter at the same time keep engine... Should do is clear the DTCs ( commonly known as “ codes ). You see the check engine light came on again, did another diagnostic test same! Optimize the fuel is being burned can have up to four oxygen sensors Ion which... An replace oxygen sensor check engine light came back within the powertrain 4cyl 2.2 ltr manual transmission truck can have up to four oxygen sensors soon... As soon as you see the check engine light has been racing the. Diagnostic and take the guseeing out of this possible about automotive and accessories related topics transmission! Cel comes back on my reapir manuals and found that there is no power to the electronic control,... Question about your car needs reason is because of a failing throttle position sensor, Saturn pre-owned! Actually a generic code, meaning it can be thrown from any after... You know that i am discussing was a County owned and operated vehicle … when replace... You have a certified pre-owned ( CPO ) car program a diagnostic take. On—But that ’ s not all when any of the time, the, how much fuel being... And take the guseeing out of the post cat oxygen sensor in your case, if you do n't how... Up with the same thing will come on your cat, or ECU, the simplest reason because. Ion: which one should i Buy hi there, the vehicle somewhere the!
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