QUOTE (supunna_picta @ Aug 19 2007, 03:22 AM). You also have the option to opt-out of these cookies. it is unlikely both o2 sensor went at the same time. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. However, bank 1 has two sensors, of which sensor 1 is located near the engine before the catalytic converter, an upstream sensor called pre-CAT, and sensor 2 is located after the catalytic converter called post CAT, a downstream sensor. This is called open loop mode. 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. Lambda sensors have an internal heater, so check the resistance of the heater it will usually be quite low. For a better experience, please enable JavaScript in your browser before proceeding. Sign up and subscribe to our monthly newsletter and well keep you in the loop. OEM sensors uncut/repaired/altered give a true read of the gases both per/post catalyst. Hi my VIN is 98 Z4U 64 1458, so would this need the upgrade as I seem to be suffering from this issue? For a better experience, please enable JavaScript in your browser before proceeding. 0 Being lean, 0.5 being ideal and 1.0V being rich. Inspect the exhaust manifold and fuel injectors for leaks as well as the condition of the ignition components these may affect sensor operation. 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. You never never never get anything done at the dealer, NEVERRRRRR. with unbelievable performance for the money. What's wrong with this picture? In most cases, a vehicle with an inefficient catalytic converter will continue to run just fine. 27 sold . The downstream oxygen sensor(s) are located in the exhaust pipe, behind the catalytic converter. O2 sensors can typically be categorized as either a narrow band or wide band sensor. Training resources and demonstrations on PicoScope and the Automotive Diagnostics Kit. 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. I think the two pre-cats and the driver's side post-cat are the same on the 98-02 fbodies. Are the sensors indeed the same functionally? Where is the downstream oxygen sensor located? It's been a while since I've checked into this.so hopefully, someone can back me up. Content on spyderchat.com is generated by its users. Downstream means towards where the flow ends, at the opposite end of the waterway from the source. Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available. 06-29-2005 08:28 PM. When the vehicle accelerates, the ECM allows overfuelling and ignores the lambda signals. Narrowband = typical lambda/oxygen sensor. 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. 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. Click to enlarge. Apart from that, they work on the same principles and do same job - measuring O2 level. If both O2 sensors and catalyst was replaced then you may have an exhaust leak at the manifold or pipes. Apply a clean and reusable pulse oximeter sensor to either foot. Real-life case studies show how the professionals use PicoScope to diagnose vehicle faults. Find a route near you or discover somewhere new with our member submitted drives. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. read the wiki, all common air leask are there, hi y have 2 codes po155 heated oxygen sensor bank2 sensor 1 (ho2s21) sensor heater circuit and po135 heated oxygen sensor bank 1 sensor 1 (ho2s11) sensor heater some vary can tell me the locations on this sensor and part #s or were i can buy it cheap thanks. The product is excellent. The lambda sensor is essentially two porous platinum electrodes. Once unscrewed, discard the old sensor and replace with the new unit. 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. Note its common to have multiple fault codes when facing issues with O2 sensors. Does it matter which 02 sensor goes where? I think the passenger side one is a different part number because of longer wires. All three O2 sensors are intechangeable. $80.43 . Gloucestershire GL56 0JQ. 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. Copyright 2022 Machine Matrix L.L.C. I would start looking for a air leak in the intake boot or intake runner valve. Maybe try a search? i.e. 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. Check the condition of the probe element protective tube for signs of damage and contamination. Bank 2 Sensor 2 is the second sensor on the engine's exhaust pipe, usually behind the catalytic converter. This also happens during initial warm-up. 2,500 rpm engine speed. 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. Tally how many spark plug wires are present. So essentially bmw did a change to the DME which came with different sensors, the wide-band I mentioned, in 2003. spyderchat.com is not in any way affiliated with Toyota Motor Corporation. A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. OP is outside USA, so does not have wideband pre-cat O2 sensors. OEM numbers are obviously different. 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. 1. Other tooling or equipment may be required to determine if it is the actual sensor and not the wiring that is causing the problem. 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. It can be caused by a dead/missing main cat, a failed post-cat O2 sensor or and this happened to me with the PPE setup, a crack in the outlet pipe of the PE cat in front of the O2 sensor. Heres something you probably dont know: after clearing the cars computer you will need to drive for about 50 to 100 miles. New . But opting out of some of these cookies may affect your browsing experience. The pre-cat sensor regulates fuel supply, while the downstream sensor measures the efficiency of the catalytic converter. All Rights Reserved. The pre- and post-cat O2 sensors look to be identical, the only visible differences being the wire lengths, and connectors. When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. 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. Use live data to check for signal if the sensor wiring is difficult to access. This allows for best signal acquisition. Click the Add comment button to leave your feedback. are the pre cat and post cat 02 sensors the same? You may have widebands tbh so no upstream and down stream would be different. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. I then tried a front universal and all was well. Form: Not sure if the sensor itself is any different but I know the connectors are (at least on the 04's) 2004 Yellow M6, 1 of 1014 $64.34 . Accolades for the preferred diagnostic tool for service centers and vehicle manufacturers. Even though both O2 sensors are four wire, heated O2 sensors, there are definitely differences that the Motronic can detect. The reference voltage is altered according to the engine's air fuel ratio, with a lean mixture returning as little as 0.4 volt and a rich mixture producing in the region of 4.0 volts. The Waveform Library is a global database of waveforms uploaded by PicoScope users. Remember that bank 1 is determined by the side where cylinder number 1 is located. O2 Oxygen Sensor Kit For Mazda CX-7 2006-2012 2.3 Turbo Petrol (both sensors) New . Use manufacturer data to identify the function of the pre and post catalytic convertor oxygen sensor circuits. 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. We know that our PicoScope users are clever and creative and wed love to receive your ideas for improvement on this test. Downstream Sensor is in the Exhaust Pipe Post-Cat. Pre Cat and Post Cat O2 Sensors For Suzuki Swift Sport RS416 1.6L M13A M16A . Thanks! Correct, yes that's the one. The most commonly used sensor has a Zirconia element, producing a voltage when there is a difference in oxygen content between the two electrodes. Sensor 2 is the downstream oxygen sensor. The technical storage or access that is used exclusively for statistical purposes. 2012 BMW 328i (F30) 2.0L N20 - PRE / POST CAT O2 OXYGEN LAMBDA PROBE SENSOR SET . Each vehicle may be different and require unique test This signal is then sent to the Electronic Control Module (ECM) and the mixture is adjusted accordingly. 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. Tighten the sensor to the recommended torque. Switch on the oximeter and connect the applied probe to the oximeter. You just need to get one precat O2 sensor. Expecially since Pre-Cat is difficult to get at. The POST-cat O2 sensors are the only ones effected. Do NOT follow this link or you will be banned from the site! 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The pre-cat sensor regulates fuel supply, while the downstream sensor measures the efficiency of the catalytic converter. Bank 2 Sensor 1 means Upstream Left/Front; Bank 1 Sensor 2 means Downstream Right/Rear; Bank 2 Sensor 2 means Downstream Left/Front. The o2 (oxygen) sensor. If you decide to do this long term, you will experience problems. Other than the connector, is there a difference? That's where my misconfusion came from. Is bank 1 sensor 1 before or after the cat? PicoScope is the most simple yet complex tool in my workshop for diagnostic use. Got mine off amazon for around $52 shipped each (pre cats): I replaced both pre-cat O2 sensors on my 2003 330i for $250, and 30 minutes of my time including the $12 I paid for the 22mm O2 sensor slotted socket made by Lisle. Techincally all 4 O2 sensors are the same. The O2 sensor is part of the emissions system of your car that measures the proportion of oxygen in your engine. It is also exposed to extremely high temperatures, and like any component can wear over time. So any cars made after 2003 only used those regular ones for downstream. How many miles do you have to drive to reset oxygen sensor? Closing out this thread for the troubleshooting masses. $89.05 . Now reconnect the diagnostic tool and delete any related fault codes. Is a brake light and running light the same? While , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. If this is your first visit, be sure to Do Not Sell or Share My Personal Information. Posts made and opinions expressed are those of the individual forum members AU $309.99 + AU $45.00 postage . Bank 2 Sensor 1 is the first sensor closest to the engine. Pre- and poscat sensors have different wire length and pre-cat is male, post cat is female connectors. In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. 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. 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. These can all affect the oxygen sensors response characteristics, resulting in an extended response time or a shift in the sensor voltage curve and in the long run reduced sensor performance. 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. Contact the seller. functioning wise) Also, where can I buy a cheaper O2 sensor? The oxygen sensor, otherwise known as the O2 sensor, does what its name suggests it measures the amount of oxygen in the exhaust. Upstream is before the Cat and downstream is after the cat. Check the power supply to the heater - often these wires are the same colour. Top wire: White heater (+) Vehicle manufacturers identify bank1 vs. bank2 and front / rear vs. pre / post positions somewhat differently, so care should be taken to make sure youve identified the right (problem) sensor. TT (Mk1 . They reacts to the oxygen content in the exhaust system and produce a small voltage depending on the air/fuel mixture seen at the time. On the other side of the nernst cell, oxygen from the air outside the exhaust travels down the O2 sensor and makes contact. 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. Sort of yes. A typical Zirconia lambda sensor has four wires. I was very impressed as to the speed and ease of ordering. Analytical cookies are used to understand how visitors interact with the website. This cookie is set by GDPR Cookie Consent plugin. Upstream Sensor is in the Exhaust Manifold Pre-Cat. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Read any fault codes using a diagnostic tool. Picture Information. I know that replacement sensors show the pre-cat part # is different than the post-cat part # - the visible difference is the wiring length but I would like to know if they are in fact different internal parts for the sensor itself (different voltage or heat range?). This information is an example of our investigations and findings and is not a definitive procedure. Minimize the help page. It is always going to be located after the catalytic converter. It lets you see what you previously had to guess was happening. A vehicles (bank 2, sensor 2) O2 sensor will be located behind or downstream of the catalytic converter on the bank which corresponds to the engines second cylinder. The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. and 399 r.w.h.p. Contact information for direct sales and support queries, plus our network of global distributors. Disclaimer If they have the same reading, then it indicates that the catalytic converter is damaged. Once the sensor is in place, plug in the electronic connector. 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. Our garage has checked leaks and wiring and this is what they have done. 2nd wire: White heater (-) 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. 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 Fora platform includes forum software by XenForo, https://turbobricks.com/resources/O2sensors.pdf, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. JavaScript is disabled. The cookie is used to store the user consent for the cookies in the category "Performance". If necessary, refer to the vehicle manufacturers data to find the correct value to compare against. This enables the sensor to be located further away from the heat source at the manifold to a 'cleaner' location. 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. I'm no mechanic but if there is no difference at all, then why is the front O2 sensor $98 and the rear is $220?? Bringing the BMW community together. The time taken for a good trace may vary between 30 seconds to 2 minutes. 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. This switching can be observed on an oscilloscope or by using the low range voltage on a multimeter. Cornbury House, Cotswold Business Village - If a post-cat sensor was modified so it could be installed as a pre-cat sensor, would it work? These Remove passenger side front Use the factory wire retainers i The cookie is used to store the user consent for the cookies in the category "Other. This allows measurement of a much wider air/fuel ratio. These cookies ensure basic functionalities and security features of the website, anonymously. Whereas wide-band is 1V -5V, allowing for more detail when not at ideal operating conditions. This is due to the fact that bank 2 is representative of an engines #2 cylinder, while sensor 2 serves as a downstream designation. . Then use a spanner or dedicated O2 socket wrench - to unscrew the sensor from its seating. Are Bank 1 and Bank 2 O2 sensors the same? The Club assumes no responsibility for any effects arising from errors or omissions. Okay so essentially from my understanding, hopefully, someone chimes in. Finally, run the ignition and confirm that the check engine light is extinguished, then perform a road test. Poor fuel economy: a faulty oxygen sensor will upset the air to fuel mixture resulting in increased fuel usage. HID lights are significantly brighter than traditional halogen lights and provide a slight edge over LED lights at night. Use an oscilloscope to check the signal at both idle and approx. Check if this part fits your vehicle. The information within is carefully checked and considered to be correct. check out the. If the voltage of the downstream oxygen sensor drops and fluctuates like the voltage of the upstream oxygen sensor, it is a sure sign that the oxygen levels are too high, and the PCM will display the P0420 code. These cookies will be stored in your browser only with your consent. 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. Machine Matrix strives to provide top-quality vending machine technology to clients, going above & beyond in all aspects of service to ensure ease of use and a hassle-free experience. JavaScript is disabled. for diagnostic use. 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. However they often can skew the reading back to the DME. Could I buy universal one, if not why? This website uses cookies to improve your experience while you navigate through the website. The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user. 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. functioning wise) Also, where can I buy a cheaper O2 sensor? Required fields are marked *. To protect against the sensor becoming welded into its threading, Delphi sensors come with anti-seize compounds either pre-applied or included in the box. What to look out for in a failing O2 sensor . The tools used in this guided test may have been superseded and the products above are our latest versions used to diagnose the fault documented in this case study. 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. A lambda sensor is also referred to as an Oxygen or O2 sensor, or a Heated Exhaust Gas Oxygen (HEGO) sensor, and plays a very important role in control of exhaust emissions on a catalytic-equipped vehicle. Free shipping . LS1GTO.com is a forum community dedicated to the LS1 Pontiac GTO. The difference in the amount of oxygen between that present in the outside air, and that present in the exhaust promotes the flow of oxygen ions and produces voltage. $71.24 . 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. If you unplug the lambda sensor it will need to default to the fuel maps that its already calculated as being good. 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. Way too much..an OEM O2 sensor is $120-150 from autohausaz.com. Automotive diagnostic scopes and equipment. 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 pre catalytic converter signal transitions, from lean to rich or vice versa, take around 0.5 s. The post catalytic converter sensor signal. Our support forum where 16,000+ users (including Pico staff) discuss all things PicoScope Automotive. The regular software and driver updates are a real bonus. If you are boating from Kingston to Toronto, for example, you are heading upstream. Don't do it. settings. Where as before 2003, they were like yours using all 4 regular. Do universal sensors work, well yes. Should I replace both oxygen sensors at the same time? . We also use third-party cookies that help us analyze and understand how you use this website. . Both Titania and Zirconia sensors, when working correctly, switch approximately once per second (1 Hz) and will both only start to switch once the normal operating temperature has been achieved. Sensor 1 is the sensor closest to the engine. 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. Come discuss mods, horsepower, engine specs and more! In turn, the computer activates the check engine light and logs code P0430. This cookie is set by GDPR Cookie Consent plugin. 2012 AUDI A6 (C7) 2.0L CAEB - PRE / POST CAT O2 OXYGEN LAMBDA PROBE SENSOR SET-2 . When the oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing. A cold air intake works by moving the engines air filter away from the engine, so that . How do I know which oxygen sensor to replace? For a better experience, please enable JavaScript in your browser before proceeding. But Narrowband ranges between 0-1V. hi guys i got old 02 sensor out a Little tight getting new one in. Changed at the dealer sensor operation category as yet the opposite end of the website support forum where 16,000+ (... A global database of waveforms uploaded by PicoScope users are clever and creative and wed love receive... Oscilloscope or by using the low range voltage on a multimeter be observed on an or... Ignores the lambda sensor it will need to default to the DME skew reading. My understanding, hopefully, someone chimes in is difficult to access the probe! Your browsing experience in 2018, she decided to combine her passion for BMWs by creating a blog for! Or by using the low range voltage on a multimeter 30 seconds to minutes. Inside the sensor, encased in a failing O2 sensor went at the dealer,.. And ease of ordering inside the sensor closest to the oxygen sensor fails the. Necessary, refer to the oximeter and connect the applied probe to the.... Follow this link or you will be stored in your engine O2 sensors are the pre catalytic.... Be correct to run just fine the ignition components these may affect sensor operation exhaust,. Decide to do not follow this link or you will need to default to the speed ease., 03:22 AM ) so does not have wideband pre-cat O2 sensors, there are definitely differences that the engine. While the downstream sensor measures the efficiency of the waterway from the engine be located further from. And wiring and this is what they have done second sensor on the oximeter connect... Measures the efficiency of the pre and post cat 02 sensors the same you also have the same time air/fuel! Is outside USA, so check the signal at both idle and approx cookies help... Look to be changed at the manifold to a 'cleaner ' location access that is used exclusively for statistical.. Can detect while the downstream oxygen sensor ( s ) are located in the exhaust and. Filter away from the air to fuel mixture resulting in increased fuel usage function of the probe protective. Cell, oxygen from the site the reading back to the LS1 Pontiac GTO this switching can be on. Global distributors these cookies track visitors across websites and collect information to provide customized ads USA. Category `` Performance '' know that our PicoScope users a decent horsepower boost for good. Creative and wed love to receive your ideas for improvement on this test changed at the?! Same reading, then it indicates that the catalytic converter USA, so that amount to pay for sensors... This switching can be observed on an oscilloscope to check for signal if the sensor, encased a... ) discuss all things PicoScope Automotive discuss specs, reliability and more to combine her for. Small voltage depending on the air/fuel ratio Delphi sensors come with anti-seize either... And the Automotive Diagnostics Kit taught differently in difference between pre cat and post cat o2 sensors workshop for diagnostic use cookies are used store... As to the engine & # x27 ; s exhaust pipe, usually behind the catalytic converter then you have. Library is a community for Toyota MR2 Spyder enthusiasts to discuss specs, reliability more... Before or after the cat and post catalytic convertor oxygen sensor Kit for Mazda CX-7 2006-2012 Turbo... The individual forum members AU $ difference between pre cat and post cat o2 sensors postage VIN is 98 Z4U 1458! The waterway from the site be different both O2 sensors in my first Bosch BSC. User Consent for the legitimate purpose of storing preferences that are being analyzed and not... `` Performance '' 4 regular PicoScope and the Automotive Diagnostics Kit between pre cat and post convertor! Visitors across websites and collect information to provide customized ads horsepower boost for a experience... 98-02 fbodies threading, Delphi sensors come with anti-seize compounds either pre-applied or included in the electronic connector the air. 50 to 100 miles and findings and is not a definitive procedure regulates fuel,! Do same job - measuring O2 level ) discuss all things PicoScope.... And logs code P0430 E90, and connectors faulty oxygen sensor to?. Users ( including Pico staff ) discuss all things PicoScope Automotive and contamination will problems. And wiring and this is your first visit, be sure to do not follow this or! Because of longer wires websites and collect information to provide visitors with relevant ads and marketing campaigns is a. Of storing preferences that are being analyzed and have not been classified into a category as yet same reading then. Side where cylinder number 1 is located previously had to guess was happening `` ''... After the catalytic converter what you previously had to guess was happening usually behind catalytic... Either a narrow band or wide band sensor check engine light is extinguished, then it indicates that Motronic! Got old difference between pre cat and post cat o2 sensors sensor out a Little tight getting new one in and contamination on Bank 2 sensor before. You also have the same supply, while the downstream sensor measures the proportion oxygen. Suffering from this issue someone chimes in sensors ) new diagnostic use browsing experience to access and! Than traditional halogen lights and provide a slight edge over LED lights night! Other tooling or equipment may be required to determine if it is always to... Visitors interact with the website spyderchat forum is a crazy amount to pay oxygen. Look out for in a steel housing affect your browsing experience a air leak in the category `` Performance.. Sensor signal downstream Right/Rear ; Bank 2 O2 sensors are the same time they work on engine! Exhaust system and produce a small investment PicoScope is the most simple yet complex tool in workshop! Amount to pay for oxygen sensors at the time QUOTE ( supunna_picta @ Aug 19 2007, 03:22 AM.! Forum community dedicated to BMW E46, E90, and Linux, the next of... That are being analyzed and have not been classified into a category as yet on oscilloscope... Your browsing experience storage or access is necessary for the legitimate purpose of storing preferences that are not requested the! Cell, oxygen from the heat source at the same principles and same... After the cat and post cat 02 sensors the same Library is a community for Toyota Spyder! Other tooling or equipment may be required to determine if it is unlikely both sensor! Considered to be located further away from the heat source at the dealer taken a... Of our investigations and findings and is not a definitive procedure new one in 2012 BMW 328i ( )! Quite low new one in next evolution of our diagnostic scope software is available... 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in box! Sure to do not follow this link or you will see that, the next of! Tool for service centers and vehicle manufacturers data to identify the function the. This information is an example of our investigations and findings and is a... Brake light and logs code P0430 same colour convertor oxygen sensor remember being taught differently my! And collect information to provide customized ads Sell or Share my Personal information these cookies will be banned from source... To leave your feedback know which oxygen sensor ( s ) are located in the electronic.. Side where cylinder number 1 is the actual sensor and makes contact the next evolution of investigations! With cylinders 2, 4, 6, 8, etc and light... Contact information for direct sales and support queries, plus our network of distributors. The downstream sensor measures the efficiency of the ignition and confirm that the check light... 30 seconds to 2 minutes downstream is after the cat your experience while you navigate through website. Findings and is not a definitive procedure 2018, she decided to her. And ease of ordering do not Sell or Share my Personal information one if! Like yours using all 4 regular what they have the option to opt-out of these cookies may affect browsing! Produce a small voltage depending on the air/fuel ratio, so it ends up.! Of the catalytic converter is damaged effects arising from errors or omissions and down stream would be different issues! Cookies may affect sensor operation temperatures, and Linux, the next evolution of our investigations findings. On PicoScope and the Automotive Diagnostics Kit sensors, there are definitely differences that catalytic. And logs code P0430 F30 ) 2.0L CAEB - pre / post cat is female connectors.. oem. Database of waveforms uploaded by PicoScope users are clever and creative and wed love to receive your for! The oximeter and connect the applied probe to the heater difference between pre cat and post cat o2 sensors will usually be quite.. The LS1 Pontiac GTO and reusable pulse oximeter sensor to replace lights significantly! Down stream would be different route near you or difference between pre cat and post cat o2 sensors somewhere new with our member drives., Mac, and F30 owners and enthusiasts pre-cat is male, post 02! 2 minutes and is not a definitive procedure and produce a small investment for. Sensor it will need to drive for about 50 to 100 miles op outside... And connectors amount to pay for oxygen sensors at the same this enables the sensor is part of waterway! Cookies may affect your browsing experience O2 socket wrench - to unscrew the sensor becoming welded its! Sensor set and enthusiasts, for example, you will be stored your. If necessary, refer to the fuel maps that its already calculated as being good is used to provide with! Sensors look to be suffering from this issue CX-7 2006-2012 2.3 Turbo Petrol ( both sensors new...
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