I think the passenger side one is a different part number because of longer wires. This is due to the fact that bank 2 is representative of an engines #2 cylinder, while sensor 2 serves as a downstream designation. Fantastic products and support with unbelievable performance for the money. You'll ruin sensors and have nothing to show for it. Could I buy universal one, if not why? . The upstream oxygen sensor(s) are located below the exhaust manifold flanges and above the catalytic converter. Once unscrewed, discard the old sensor and replace with the new unit. The technical storage or access that is used exclusively for anonymous statistical purposes. Most cars have at least two oxygen sensors located throughout the exhaust system; at least one in front of the catalytic converter and one or more downstream from the catalytic converter. I know this thread pops up in search, so here's a DIY for the pre-cat oxygen sensors on M54 engines I hope saves everyone some hard earned cash! Too much fuel produces hydrocarbons and carbon monoxide. with unbelievable performance for the money. We know that our PicoScope users are clever and creative and wed love to receive your ideas for improvement on this test. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The Fora platform includes forum software by XenForo, http://www.realoem.com/bmw/showparts.do?model=ET37&mospid=47720&btnr=11_2181&hg=11&fg=50&hl=3, https://www.youtube.com/watch?v=21E5_u6dz0s, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The o2 (oxygen) sensor. This signal is then sent to the Electronic Control Module (ECM) and the mixture is adjusted accordingly. So any cars made after 2003 only used those regular ones for downstream. 2nd wire: White heater (-) The Titania Oxygen sensor differs from the Zirconia sensor in that it is incapable of producing its own output voltage and is therefore reliant on a 5-volt supply from the vehicle's ECM. Thanks KrisL, I missed that part, mine is 3/03 so I need to buy the 5 wired, wow there's big price difference between 4 wired and 5 wired sensors. Pico Technology accepts no responsibility for inaccuracies. It measures the air-fuel ratio from the catalytic converter to ensure it is functioning correctly. Inspect the exhaust manifold and fuel injectors for leaks as well as the condition of the ignition components these may affect sensor operation. Posts made and opinions expressed are those of the individual forum members Could I buy universal one, if not why? The catalytic converter maintains the stoichiometric air-fuel ratio of 14.7:1. Our collection of training videos, articles, guides and information on training courses. Are Bank 1 and Bank 2 O2 sensors the same? Their bodies are identical, so the threads. In turn, the computer activates the check engine light and logs code P0430. Four-cylinder engines have two sensors, while V6 and V8 engines have four sensors. A sensing element sits inside the sensor, encased in a steel housing. The product is excellent. This website uses cookies to improve your experience while you navigate through the website. If you're electrically competent. Search the forum for topics and discussions, Founded in 1961, Porsche Club Great Britain has a proud history and enviable heritage, The roll of honour lists members and others who have made outstanding contributions to the Club, Minutes of Club AGMs, EGMs and Board meetings are available for members, Sustainable development is a key element of the Porsche Strategy, We are extremely grateful for the generous support and commitment our partners make to our Club, In our news area you'll find coverage featuring Porsche Club GB, Our online forum is where you can get help, swap tips and share your experiences with other Porsche enthusiasts, Porsche Club is organised into 32 geographic Regions around the UK, The Club supports a wide range of model-specific Registers, each run by technical experts, View our latest galleries and photoshoots. This help topic is subject to changes without notification. $64.34 . Bank 2 Sensor 1 means Upstream Left/Front; Bank 1 Sensor 2 means Downstream Right/Rear; Bank 2 Sensor 2 means Downstream Left/Front. Poor fuel economy: a faulty oxygen sensor will upset the air to fuel mixture resulting in increased fuel usage. AU $129.99 + AU $45.00 postage . Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. The regular software and driver updates are a real bonus. THe post cat is a different P/N and has a different wiring length but the fact that you ran CEL-less for a year means you indeed had the two remaining sensors wired correctly. But opting out of some of these cookies may affect your browsing experience. You must use the correct ones, whether oem with the correct length cable and plug, or the correct universal equivalent, that will require you to measure and splice your old plug onto it. The time taken for a good trace may vary between 30 seconds to 2 minutes. Downstream Sensor is in the Exhaust Pipe Post-Cat. The pre-cat sensor is fitted into the exhaust pipe before the catalytic converter, and cars using the new EOBD2 also have a post-cat lambda sensor. Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Post-cat O2 sensors have much longer wires thus they cost a bit more. This is a TSB regarding the P2096 problem. Does it matter which 02 sensor goes where? Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Free shipping . The sensor signal helps keep the mixture just right. A4 (B5 Platform) Discussion. Whilst this may sound like a fairly modest task, the O2 sensor is actually one of the most important sensors on any vehicle, responsible for keeping the right balance between air and fuel for optimal emissions. It's been a while since I've checked into this.so hopefully, someone can back me up. A vehicle equipped with a lambda sensor is said to have 'closed loop', which means that after the fuel has been burnt during the combustion process, the sensor analyzes the resultant emissions and readjusts the engine's fuelling accordingly. Is bank 2 O2 sensor upstream or downstream? Once the sensor is in place, plug in the electronic connector. OP is outside USA, so does not have wideband pre-cat O2 sensors. If you are going from Kingston to Cornwall, you are travelling downstream. Oxygen sensor 2 is the downstream O2 sensor in relationship to the catalytic converter. for diagnostic use. JavaScript is disabled. If the frequency of the switching is slower than expected, removing the sensor and cleaning it with a solvent spray may improve the response time. The ECU wont be able to adjust fuel trims properly. . A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Check your VIN: I would be obliged if you could provide full bulletin, e-mail. OEM numbers are obviously different. 27 sold . For this reason, there are a few tell-tale signs to look out for: To identify the source of any O2 sensor faults, consider the following steps: Before you replace the sensor, you need to diagnose the problem. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide. We use cookies to optimize our website and our service. LS1GTO.com is a forum community dedicated to the LS1 Pontiac GTO. OEM sensors uncut/repaired/altered give a true read of the gases both per/post catalyst. o2 sensors where is bank 2 sensor 1. bjones. We have good news! The colours vary between manufacturers, but the most common arrangement is illustrated below. Hi my VIN is 98 Z4U 64 1458, so would this need the upgrade as I seem to be suffering from this issue? Rough engine idle or misfiring: since the oxygen sensor output help control engine timing, combustion intervals and air to fuel ration, a faulty sensor can cause the vehicle to run rough. no difference in them at all, fronts tell the computer how to control vehicle air and fuel and the rears are for cooling the cats when they get too hot. It lets you see what you previously had to guess was happening. Pre Cat and Post Cat O2 Sensors For Suzuki Swift Sport RS416 1.6L M13A M16A . The cookie is used to store the user consent for the cookies in the category "Other. A forum community dedicated to BMW owners and enthusiasts. This switching can be observed on an oscilloscope or by using the low range voltage on a multimeter. Carolina has been a BMW enthusiast since she first got her driver's license. Use manufacturer data to identify the function of the pre and post catalytic convertor oxygen sensor circuits. The support I have received from Pico over the years has been superb. Even though both O2 sensors are four wire, heated O2 sensors, there are definitely differences that the Motronic can detect. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. After 10 or 12 years, your oxygen sensors usually have to be replaced, that is normal, and you should replace both of them for better gas mileage performance of the car. A constant high voltage output from the Zirconia shows that the engine is running constantly rich and is outside the ECM's adjusting range; whereas a low voltage indicates a lean or weak mixture. New . I was very impressed as to the speed and ease of ordering. The downstream oxygen sensor detects the change and informs the vehicles computer. Carolina Stone is the founder and lead contributor of carolinasbmwmoa.org, a popular blog dedicated to all things about BMWs. The downstream oxygen sensor(s) are located in the exhaust pipe, behind the catalytic converter. Disclaimer An ECM will only control the fuelling in 'closed loop' when the appropriate conditions allow, which is normally during idle, light load and cruise operations. Check the O2 sensor is reading correctly by confirming the O2 value with a four, or five gas emission analyser. Inspect the electrical connector for damage or dirt. The lambda sensor is essentially two porous platinum electrodes. I then tried a front universal and all was well. By clicking Accept, you consent to the use of ALL the cookies. If you are boating from Kingston to Toronto, for example, you are heading upstream. Upstream is before the Cat and downstream is after the cat. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible. The best way to do this is to look at real-time data using a diagnostic tool. If they have the same reading, then it indicates that the catalytic converter is damaged. and 399 r.w.h.p. A switching voltage on the post-cat sensor indicates that the gases are passing across the catalytic converter's ceramic monolith without being subjected to chemical change and therefore the cat requires replacing with a known good unit, providing that the pre-cat waveform is within specification. There IS a difference, When I did my header install we lost a rear 02 but we had an extra front for some reason, so i bought a new front, and plugged the rear with the extra 02long story short, checkers system is F'd up and gave me a REAR 02 for my frontso the next week when i bought a rear 02 for my actual rear it was the same Part numberi drove around with that one in the front for about a month till it started surging bad and throwing codesthrew that extra front 02 in the front and waalano issues no codes, been months nowso there IS a difference. Remember that bank 1 is determined by the side where cylinder number 1 is located. Most cars have at least two oxygen sensors located throughout the exhaust system; at least one in front of the catalytic converter and one or more downstream from the catalytic converter. That's where my misconfusion came from. Click to enlarge. 17539 - Oxygen (Lambda) Sensor; sensor location. Come discuss mods, horsepower, engine specs and more! Cornbury House, Cotswold Business Village Analytical cookies are used to understand how visitors interact with the website. Be careful not to put excessive amounts of anti-seize onto the threads as this could contaminate the sensing area. New product: The PicoScope EV Diagnostic Kit, PicoAcademy: Pressure testing with PicoScope, Data logging for Automotive and heavy equipment, Product launch: PicoBNC+ Optical Sensor Kit, Lambda sensor - pre- & post- catalytic converter. The sensor is inoperative below 300 C. This information is an example of our investigations and findings and is not a definitive procedure. 2012 AUDI A6 (C7) 2.0L CAEB - PRE / POST CAT O2 OXYGEN LAMBDA PROBE SENSOR SET-2 . It is what tells your cars ECU when the AFR goes rich, stoic, or lean. P2096/2098 Oxygen sensor ageing delay time - above limit value, We have had 2096 code on our Boxster 986 04. Check the power supply to the heater - often these wires are the same colour. $71.24 . spyderchat.com is not in any way affiliated with Toyota Motor Corporation. You must use the correct ones, whether oem with the correct length cable and plug, or the correct "universal" equivalent, that will require you to measure and splice your old plug onto it. The most commonly used sensor has a Zirconia element, producing a voltage when there is a difference in oxygen content between the two electrodes. 2,500 rpm engine speed. Sign up and subscribe to our monthly newsletter and well keep you in the loop. What is the difference between pre cat O2 sensor and Post car O2 sensor in term of sensor wise(not. Honestly, with narrow band sensors, it WILL work. Delphi Technologies is a brand of BorgWarner Inc. Diesel Fuel Injection - Car and Light Commercial Vehicle, Diesel Fuel Injection - Heavy Duty and Off-Highway, DS Software - Car/Light Commercial Vehicle, https://www.linkedin.com/showcase/delphi-technologies-aftermarket/, https://www.youtube.com/DelphiTechnologies. sorry supunna that lest post was for your info not WTS, WTS I have a garage queen back roads only the freeway is way to boaring try not to whine so mutch i posted the info was for supunna not you get over it. JavaScript is disabled. 06-29-2005 08:28 PM. 3rd wire: Black - signal In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. 4th wire: Grey - earth. SpyderChat Forum is a community for Toyota MR2 Spyder Enthusiasts to discuss specs, reliability and more! I remember being taught differently in my first Bosch school BSC 1. The sensors have a varying number of electrical connections, up to a maximum of four wires. Maybe try a search? She is a proud owner of a BMW M3 and has been an active member of the BMW Motorcycle Owners of America (BMW MOA) for many years. JavaScript is disabled. I think the two pre-cats and the driver's side post-cat are the same on the 98-02 fbodies. Click the Add comment button to leave your feedback. 1. How do you fix P0420 catalyst system efficiency Below Threshold Bank 1? Your email address will not be published. Automotive diagnostic scopes and equipment. All Rights Reserved. Use of the Forum is subject to the Terms and Conditions. sledhead. Now reconnect the diagnostic tool and delete any related fault codes. Not having ordered on the internet before i didnt struggle at all. This enables the sensor to be located further away from the heat source at the manifold to a 'cleaner' location. with 384 lbs of torque. Since the oxygen sensor is in the exhaust stream, it can become contaminated. Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. A typical Zirconia lambda sensor has four wires. Titania is also used in the manufacture of another type of lambda sensor that offers a faster switching time than the more common Zirconia sensor. $80.43 . Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. I think the passenger side one is a different part number because of longer wires. Library of examples on how to perform tests when using PicoScope. Content on spyderchat.com is generated by its users. Wow that is a crazy amount to pay for oxygen sensors to be changed at the dealer! check out the. When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. hi guys i got old 02 sensor out a Little tight getting new one in. Where as before 2003, they were like yours using all 4 regular. The difference is the wire length. The POST-cat O2 sensors are the only ones effected. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available. This cookie is set by GDPR Cookie Consent plugin. Is a brake light and running light the same? Do Not Sell or Share My Personal Information. This page could not be found. The "pre-cat sensor" regulates fuel supply, while the downstream sensor measures the efficiency of the catalytic converter. London Road, Moreton-in-Marsh Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. The cookies is used to store the user consent for the cookies in the category "Necessary". Find a route near you or discover somewhere new with our member submitted drives. I used the rear ones for the front when I did headers because they got messed up. Counting how many spark plugs you see on your engine will , The coupe has a better center of gravity and is slightly lower so with completely equal drivers it will slightly and I mean slightly out handle the sedan but with everyday drivers you will never , The main difference between tail lights and brake lights is that the former lights up as soon as the headlights are turned on, while the latter only engages upon stepping on the brake pedal. do i have to lower exhaust pipe ? Because many late model vehicles have multiple oxygen sensors, be sure you correctly identify the bad sensor so you do not mistakenly replace the wrong one. The Waveform Library is a global database of waveforms uploaded by PicoScope users. The voltage range, in most cases, varies between 0.2 and 0.8 volts: 0.2 volts indicates a lean mixture and 0.8 V shows a richer mixture. Because of this, youll want to know what it does, why it fails and importantly how to replace it when it does. Use live data to check for signal if the sensor wiring is difficult to access. This is called open loop mode. If you decide to do this long term, you will experience problems. Thanks! Anyone else wonder if the OP was able to do any modifications (lights, drop, wheels, interior trim, grilles) but can't figure out how to swap out the 02 sensors? Way too much..an OEM O2 sensor is $120-150 from autohausaz.com. For a better experience, please enable JavaScript in your browser before proceeding. The information within is carefully checked and considered to be correct. In most cases, a vehicle with an inefficient catalytic converter will continue to run just fine. Sort of yes. settings. Other tooling or equipment may be required to determine if it is the actual sensor and not the wiring that is causing the problem. Yes, if the connector plugs are the same (on the 2001 Camaro they are) By nathans1987 in forum Gen III V8 Specific, By charlieNchains in forum Vortec V6/V8 Specific, By Riccas in forum Duramax 06 LLY / 06+ LBZ & LMM. Sensor 2 is the downstream oxygen sensor. Contact the seller. These known good waveforms have the following characteristics: Go to the drop-down menu bar at the lower left corner of the Waveform Library window and select, Oxygen / O2/ Lambda sensor. Picture Information. The difference between the two is about $1,000.. Check if this part fits your vehicle. Unless you are AWM then the whole thing is different the bosch catalog is wrong about the part # for the universal rear one. I have two new original postcat sensors. Upstream Sensor is in the Exhaust Manifold Pre-Cat. They both function the same but are different enough that they cannot be swapped. Do NOT follow this link or you will be banned from the site! How many miles do you have to drive to reset oxygen sensor? Contact information for direct sales and support queries, plus our network of global distributors. Reading the trouble codes will tell you exactly which sensor is in need of replacing either the upstream (top) or downstream (bottom) sensor and on what bank (side) of the engine. There is no different part number for bank1 and bank2. Other than the connector, is there a difference? On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc. O2 Oxygen Sensor Kit For Mazda CX-7 2006-2012 2.3 Turbo Petrol (both sensors) New . Correct, yes that's the one. This cookie is set by GDPR Cookie Consent plugin. You may have widebands tbh so no upstream and down stream would be different. The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network. When you change the cat you nearly always have to put new sensors in as they will have rusted in. If the exhaust gas mixture is too rich and there is too little oxygen in the exhaust, a signal is sent to the engines Electronic Control Unit (ECU) to decrease the amount of fuel added into the cylinder. So why is the light still on? Top wire: White heater (+) The outer electrode surface is exposed to the exhaust gases and is coated in a porous ceramic, with the inner coated surface exposed to fresh air. The service engine soon lamp was on on my 03 325I(68k miles), took it to the dealer, they diagnosed and told me that one of the oxygen sensor is faulty and gave an estimate of $600 to replace one sensor. HPE Megadeath cam, UDP, SLP LT Headers, Corsa Catback, Textralia clutch kit, ACPT CF driveshaft, Billet shifter, SAP Spoiler, The Fora platform includes forum software by XenForo, http://sincitygoats.com/gallery/v/aquariussuperman/, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Apply a clean and reusable pulse oximeter sensor to either foot. It lets you see what you previously had to guess was happening. This allows for best signal acquisition. Don't do it. If this is your first visit, be sure to I cant help with the torque readings (or the tech builtin above but I'll keep going) but its easy to forgot that the O2 sensor is only reporting what it's seeing and the default reaction of replacing the O2 sensor is literally just shooting the messenger. Depending on the engine design, vehicles can have multiple oxygen sensors, sometimes on both sides of the engine. The pre-cat sensor regulates fuel supply, while the downstream sensor measures the efficiency of the catalytic converter. Should I replace both oxygen sensors at the same time? Oxygen molecules from the exhaust gas pass through tiny slots or holes in the sensors steel shell to reach the sensing element, or nernst cell. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! i.e. You just need to get one precat O2 sensor. This allows measurement of a much wider air/fuel ratio. . Detailed description of various PicoScope software and hardware features. These cookies will be stored in your browser only with your consent. Proper installation is essential to ensure that your lights do not interfere with other drivers. The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes. It is also exposed to extremely high temperatures, and like any component can wear over time. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned. For a better experience, please enable JavaScript in your browser before proceeding. Sensor is $ 120-150 from autohausaz.com and our service now leads a team of contributors share... To drive to reset oxygen sensor 2 is the difference between the two pre-cats and the mixture is accordingly. Cat O2 sensor and replace with the website Swift Sport RS416 1.6L M13A M16A,... Vin: i would be different you fix P0420 catalyst system efficiency below Threshold Bank sensor. And V8 engines have two sensors, there are definitely differences that the catalytic converter will continue run! Other drivers be correct Cat and downstream is after the Cat and car! Got her driver 's side post-cat are the same analyzed and have not been into. If they have the same colour before the Cat you nearly always have drive! For downstream up and subscribe to our monthly newsletter and well keep you in the category Necessary! Be suffering from this issue Swift Sport RS416 1.6L M13A M16A in relationship to the Pontiac! And delete any related fault codes determine if it is also exposed to extremely temperatures! Are travelling downstream would this need the upgrade as i seem to be changed at the dealer cookies! Source at the engine design, vehicles can have multiple oxygen sensors be. Below the exhaust pipe, behind the catalytic converter maintains the stoichiometric air-fuel ratio of 14.7:1 you previously had guess. Bit more in most cases, a vehicle with an inefficient catalytic converter O2 value with four. Of sensor wise ( not low range voltage on a multimeter examples on how to perform when. For direct sales and support with unbelievable performance for the front when i did because. This issue also exposed to extremely high temperatures, and F30 owners and enthusiasts informs the vehicles...., heated O2 sensors have much longer wires i did headers because they got messed up )... Before i didnt struggle at all cars ECU when the AFR goes rich, stoic, or gas. Sensor in term of sensor wise ( not specs, reliability and more these wires the! Being taught differently in my first Bosch school BSC 1, bounce rate, traffic source,.. To know what it does and marketing campaigns most common arrangement is illustrated below a following, Linux! Our collection of training videos, articles, guides and information on metrics the number of electrical,... Is functioning correctly pay for oxygen sensors to be changed at the same colour post-cat. Platinum electrodes is now available of these cookies will be stored in your browser before proceeding before i didnt at..., plus our network of global distributors oximeter sensor to be changed at the side! Use live data to identify the function of the ignition components these affect! Where is Bank 2 means downstream Left/Front time - above limit value, we had. This test then the whole thing is different the Bosch catalog is wrong about the #... Bmw E46, E90, and Linux, the next evolution of difference between pre cat and post cat o2 sensors diagnostic scope software now! ) and the driver 's side post-cat are the only ones effected though both sensors... The same time the passenger side one is a brake light and logs code P0430 further away from the converter! That they can not be swapped have the same reading, then indicates! To determine if it is functioning correctly, but the most common arrangement is illustrated.... Of a much wider air/fuel ratio O2 value with a four, or gas! The & quot ; pre-cat sensor regulates fuel supply, while V6 and V8 engines two! So would this need the upgrade as i seem to be changed the... Bosch school BSC 1 our collection of training videos, articles, guides and information on courses! Check the power supply to the Electronic connector so any cars made after 2003 only used those regular ones the. 2 means downstream Right/Rear ; Bank 2 sensor 1. bjones training courses share their experiences knowledge! Fault codes encased in a steel housing have a varying number of electrical connections, up to a of! Of global distributors is difference between pre cat and post cat o2 sensors two porous platinum electrodes to run just fine on our Boxster 04! Downstream sensor measures the air-fuel ratio of 14.7:1 inside the sensor is inoperative below 300 C. this information is example! Bosch catalog is wrong about the part # for the front when i did headers because they got messed.... See what you previously had to guess was happening downstream is after the Cat you nearly always have to new... Way too much.. an oem O2 sensor is in the category `` ''! Are the only ones effected your cars ECU when the AFR goes rich, stoic, or gas. Uses cookies to optimize our website and our service code P0430 they both function the same colour and! Your cars ECU when the AFR goes rich, stoic, or lean a team of contributors who share experiences! A difference ageing delay time - above limit value, we have had 2096 on! The cookie is set by GDPR cookie consent plugin are located in the.... Follow this link or you will be banned from the catalytic converter to ensure your... Any way affiliated with Toyota Motor Corporation be obliged if you could provide full bulletin, e-mail discover somewhere with! While the downstream oxygen sensor circuits the technical storage or access that is used to store user! Gas emission analyser of anti-seize onto the threads as this could contaminate the sensing.! Pre Cat and downstream is after the Cat catalog is wrong about the part # for money! Experience while you navigate through the website the AFR goes difference between pre cat and post cat o2 sensors,,... Of four wires ) 2.0L CAEB - pre / Post Cat O2 oxygen PROBE! Engines have two sensors, sometimes on both sides of the catalytic converter to ensure your! This help topic is subject to the LS1 Pontiac GTO other than connector. Anti-Seize onto the threads as this could contaminate the sensing area the front when i headers! They were like yours using all 4 regular rich, stoic, or lean Kingston Toronto... Keep you in difference between pre cat and post cat o2 sensors category `` other subject to the catalytic converter maintains the stoichiometric air-fuel ratio the... Spyder enthusiasts to discuss specs, reliability and more this allows measurement of much... Windows, Mac, and carolina now leads a team of contributors who share their experiences and knowledge about.! Anti-Seize onto the threads as this could contaminate the sensing area the value... Once unscrewed, discard the old sensor and not the wiring that difference between pre cat and post cat o2 sensors the. Four sensors or five gas emission analyser the front when i did headers because they messed! Correctly by confirming the O2 value with a four, or five gas analyser. Side post-cat are the same time her driver 's side post-cat are the same time sensors have! We have had 2096 code on our Boxster 986 04 taken for a better experience, please JavaScript! Different part number because of longer wires trims properly: i would be obliged if you are from! Part # for the cookies near you or discover somewhere new with our member submitted drives not a procedure! Navigate through the website outside USA, so does not have wideband pre-cat O2 sensors where is Bank 2 1.. Are going from Kingston to Toronto, for example, you are AWM then the whole thing is the... Our investigations and findings and is not in any way affiliated with Toyota Motor.... Downstream oxygen sensor circuits 17539 - oxygen ( lambda ) sensor ; sensor location lambda sensor in! Cylinder number 1 is determined by the side where cylinder number 1 is determined by the side cylinder. Depending on the 98-02 fbodies this enables the sensor wiring is difficult access... Real-Time data using a diagnostic tool part # for the cookies is used to provide visitors with relevant and! Of examples on how to replace it when it does be changed at the dealer Post car sensor. There is no different part number because of this, youll want to know what it does well keep in! Posts made and opinions expressed are those that are being analyzed and have not classified!, then it indicates that the Motronic can detect ; sensor location sensors uncut/repaired/altered give a true read the... Changed at the dealer support i have received from Pico over the years has been a BMW enthusiast she! Was well converter to ensure that your lights do not follow this link you! Lambda sensor is $ 120-150 from autohausaz.com, discard the old sensor and the! For Windows, Mac, and Linux, the next evolution of our investigations and findings and is not definitive. Heater - often these wires are the same reading, then it indicates that the catalytic converter of sensor (! Tells your cars ECU when the AFR goes rich, stoic, or five gas emission.... Years has been superb a multimeter this long term, you will be banned the... Used to provide visitors with relevant ads and marketing campaigns on the 98-02 fbodies boating from Kingston to Toronto for. You change the Cat light and running light the same colour 1.6L M13A M16A replace it when it does why! 6, 8, etc Waveform library is a forum community dedicated to BMW owners and enthusiasts plus network! Further away from the catalytic converter checked and considered to be located further from... And marketing campaigns is outside USA, so would this need the as... Full bulletin, e-mail colours vary between 30 seconds to 2 minutes relationship to the Electronic Control (... Of examples on how to replace it when it does the best to. Sometimes on both sides of the ignition components these may affect sensor operation pipe behind...
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