However I'll defer to your knowledge with working at Bosch. Use of the Forum is subject to the Terms and Conditions. Poor fuel economy: a faulty oxygen sensor will upset the air to fuel mixture resulting in increased fuel usage. Because of this, youll want to know what it does, why it fails and importantly how to replace it when it does. The Club assumes no responsibility for any effects arising from errors or omissions. The code P0420 can be caused by the catalyst, O2 sensors before and after the catalyst. 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. If this is your first visit, be sure to If you unplug the lambda sensor it will need to default to the fuel maps that its already calculated as being good. The pre- and post-cat O2 sensors look to be identical, the only visible differences being the wire lengths, and connectors. The product is excellent. Where is the downstream oxygen sensor located? Carolina has been a BMW enthusiast since she first got her driver's license. Content on spyderchat.com is generated by its users. 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. These Remove passenger side front Use the factory wire retainers i please help. If required, apply the compounds to the new sensor before re-fitting. There is no different part number for bank1 and bank2. This cookie is set by GDPR Cookie Consent plugin. Confirm the fault code by selecting live data and comparing the value of the suspect faulty sensor to that of a known working sensor. This is due to the fact that bank 2 is representative of an engines #2 cylinder, while sensor 2 serves as a downstream designation. For a better experience, please enable JavaScript in your browser before proceeding. 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. 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. Thank you so much guys, now I decided to either do it myself or go to a local shop. Contact the seller. . LS1GTO.com is a forum community dedicated to the LS1 Pontiac GTO. functioning wise) Also, where can I buy a cheaper O2 sensor? Is the upstream and downstream O2 sensor the same? However they often can skew the reading back to the DME. Correct, yes that's the one. O2 Oxygen Sensor Kit For Mazda CX-7 2006-2012 2.3 Turbo Petrol (both sensors) New . 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. There is no difference between the pre and post O2 sensors. This allows measurement of a much wider air/fuel ratio. AU $129.99 + AU $45.00 postage . o2 sensors where is bank 2 sensor 1. bjones. It lets you see what you previously had to guess was happening. The catalytic converter is where you will find the sensors. These cookies will be stored in your browser only with your consent. The time taken for a good trace may vary between 30 seconds to 2 minutes. 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. Your email address will not be published. The difference is the wire length. What is the difference between pre cat O2 sensor and Post car O2 sensor in term of sensor wise(not. This cookie is set by GDPR Cookie Consent plugin. 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. The cookies is used to store the user consent for the cookies in the category "Necessary". Use live data to check for signal if the sensor wiring is difficult to access. Even though both O2 sensors are four wire, heated O2 sensors, there are definitely differences that the Motronic can detect. 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. Oxygen sensor 2 is the downstream O2 sensor in relationship to the catalytic converter. The most commonly used sensor has a Zirconia element, producing a voltage when there is a difference in oxygen content between the two electrodes. please help all stuff is breaking this wknd !! The O2 sensor is part of the emissions system of your car that measures the proportion of oxygen in your engine. 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. If you are going from Kingston to Cornwall, you are travelling downstream. The support I have received from Pico over the years has been superb. 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. Heres something you probably dont know: after clearing the cars computer you will need to drive for about 50 to 100 miles. 27 sold . This is a TSB regarding the P2096 problem. This page could not be found. Why am I still getting a P0420 code after I replaced my catalytic converter? 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. 2001 camaro z28 ss vert with factory slp upgrades, Hooker long tubes, 3"y-pipe to a 4" muffler, ,airlid,s.s.r.a. How do you fix P0420 catalyst system efficiency Below Threshold Bank 1? If the exhaust gas mixture is too lean, then a signal is sent to increase the amount of fuel used in the engine. It lets you see what you previously had to guess was happening. 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 The sensor signal helps keep the mixture just right. 2nd wire: White heater (-) O2 sensors can typically be categorized as either a narrow band or wide band sensor. So you would be able to put the post cat into the pre cat and it would work just like the factory o2 sensor besides the shorter or longer wires, they do the same thing basically, right? Pre Cat and Post Cat O2 Sensors For Suzuki Swift Sport RS416 1.6L M13A M16A . Too little fuel produces nitrogen-oxide pollutants. 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. What's wrong with this picture? On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc. 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. 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. For a better experience, please enable JavaScript in your browser before proceeding. Check if this part fits your vehicle. 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. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide. $89.05 . A typical Zirconia lambda sensor has four wires. I know there wasnt a difference on my 02 SS. On the other side of the nernst cell, oxygen from the air outside the exhaust travels down the O2 sensor and makes contact. 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. For a better experience, please enable JavaScript in your browser before proceeding. - If a post-cat sensor was modified so it could be installed as a pre-cat sensor, would it work? While , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. When the oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing. Common sources of contamination include an excessively rich fuel mixture condition or oil blow-by in an older engine and engine coolant being burnt in the combustion chamber as a result of an engine gasket leak. Pre- and poscat sensors have different wire length and pre-cat is male, post cat is female connectors. Download manuals, brochures, posters, and training materials. Are the sensors indeed the same functionally? This cookie is set by GDPR Cookie Consent plugin. The POST-cat O2 sensors are the only ones effected. $80.43 . The upstream oxygen sensor(s) are located below the exhaust manifold flanges and above the catalytic converter. The colours vary between manufacturers, but the most common arrangement is illustrated below. Fantastic products and support with unbelievable performance for the money. Cornbury House, Cotswold Business Village You never never never get anything done at the dealer, NEVERRRRRR. Proper installation is essential to ensure that your lights do not interfere with other drivers. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Automotive diagnostic scopes and equipment. . The downstream oxygen sensor(s) are located in the exhaust pipe, behind the catalytic converter. 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. Our P2096 fault code problem has now been resolved. They both function the same but are different enough that they cannot be swapped. 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. Do NOT follow this link or you will be banned from the site! As I understand it, the pre cat voltages should swing between around 0.2v - 0.8v per second (mine appear to do that just fine) and the post cat . Our garage has checked leaks and wiring and this is what they have done. Switch on the oximeter and connect the applied probe to the oximeter. Come discuss mods, horsepower, engine specs and more! If you are boating from Kingston to Toronto, for example, you are heading upstream. This enables the sensor to be located further away from the heat source at the manifold to a 'cleaner' location. Check your VIN: I would be obliged if you could provide full bulletin, e-mail. The difference between the two is about $1,000.. . So any cars made after 2003 only used those regular ones for downstream. 232/234 .595,.598 +2 comp cam with ported and polished stock heads with .650 lift dual springs and a bowl grind. Analytical cookies are used to understand how visitors interact with the website. The lambda sensor is essentially two porous platinum electrodes. 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. 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. 3rd wire: Black - signal The cookie is used to store the user consent for the cookies in the category "Analytics". JavaScript is disabled. The cookie is used to store the user consent for the cookies in the category "Other. Start the engine and run until normal working temperature is reached then allow it to idle. 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. Definitely start with the sensors. If both O2 sensors and catalyst was replaced then you may have an exhaust leak at the manifold or pipes. Their bodies are identical, so the threads. Downstream means towards where the flow ends, at the opposite end of the waterway from the source. 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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. 4th wire: Grey - earth. It's been a while since I've checked into thisso hopefully, someone can back me up. Bank 2 Sensor 1 is the first sensor closest to the engine. I think the two pre-cats and the driver's side post-cat are the same on the 98-02 fbodies. A cold air intake works by moving the engines air filter away from the engine, so that . Upstream Sensor is in the Exhaust Manifold Pre-Cat. Thanks! Be careful not to put excessive amounts of anti-seize onto the threads as this could contaminate the sensing area. for diagnostic use. These cookies ensure basic functionalities and security features of the website, anonymously. tuned with EFI Live. 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. HID lights are significantly brighter than traditional halogen lights and provide a slight edge over LED lights at night. 325 e, i have 03 bmw 330xi and bank 2 oxigen sensor wire got burn out touching the four wire, i split it them but now get code p0031,p0600,p0051,p0037 and p0057 can anyone tell me how to check the voltage on those wire or the wiring schematic. 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 o2 (oxygen) sensor. Tally how many spark plug wires are present. 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. Required fields are marked *. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! 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. I remember being taught differently in my first Bosch school BSC 1. O2 Sensor Location. I tried a couple of them and got codes before I even started the car. What to look out for in a failing O2 sensor . If you need assistance having this checked or repaired, a qualified pro from YourMechanic can come to your location to inspect the system and replace any O2 sensors that are faulty. Necessary cookies are absolutely essential for the website to function properly. This also happens during initial warm-up. 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. 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. Could I buy universal one, if not why? Is upstream pre or post cat? When the vehicle accelerates, the ECM allows overfuelling and ignores the lambda signals. Click the Add comment button to leave your feedback. So essentially bmw did a change to the DME which came with different sensors, the wide-band I mentioned, in 2003. 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. Picture Information. London Road, Moreton-in-Marsh The sensors have a varying number of electrical connections, up to a maximum of four wires. This switching can be observed on an oscilloscope or by using the low range voltage on a multimeter. Pico Technology accepts no responsibility for inaccuracies. Narrowband = typical lambda/oxygen sensor. These cookies track visitors across websites and collect information to provide customized ads. All three O2 sensors are intechangeable. 1. The information within is carefully checked and considered to be correct. Four-cylinder engines have two sensors, while V6 and V8 engines have four sensors. Bank 2 Sensor 2 is the second sensor on the engine's exhaust pipe, usually behind the catalytic converter. Once the sensor is in place, plug in the electronic connector. Wow that is a crazy amount to pay for oxygen sensors to be changed at the dealer! Hi my VIN is 98 Z4U 64 1458, so would this need the upgrade as I seem to be suffering from this issue? We know that our PicoScope users are clever and creative and wed love to receive your ideas for improvement on this test. are the pre cat and post cat 02 sensors the same? Too much fuel produces hydrocarbons and carbon monoxide. We also use third-party cookies that help us analyze and understand how you use this website. 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?? I would start looking for a air leak in the intake boot or intake runner valve. How many miles do you have to drive to reset oxygen sensor? 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.e. Each vehicle may be different and require unique test Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available. Lambda sensors can have a heater element which heats the sensor to its optimum operating temperature of 600 C. Free shipping . In turn, the computer activates the check engine light and logs code P0430. It does not store any personal data. When you change the cat you nearly always have to put new sensors in as they will have rusted in. The technical storage or access that is used exclusively for statistical purposes. Is a brake light and running light the same? I think the two pre-cats and the driver's side post-cat are the same on the 98-02 fbodies. Find a route near you or discover somewhere new with our member submitted drives. 06-29-2005 08:28 PM. 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. Should I replace both oxygen sensors at the same time? In most cases, a vehicle with an inefficient catalytic converter will continue to run just fine. Remember that bank 1 is determined by the side where cylinder number 1 is located. OP is outside USA, so does not have wideband pre-cat O2 sensors. Other than the connector, is there a difference? . The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada, spyderchat.com is an independent Toyota enthusiast website owned and operated by VerticalScope Inc. 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. 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. Way too much..an OEM O2 sensor is $120-150 from autohausaz.com. In place, plug in the category `` Necessary '' sensors are the same band or wide sensor! Low range voltage on a multimeter what it does enthusiast since she first her. That our PicoScope users are clever and creative and wed love to receive your ideas for improvement on test... Four-Cylinder engines have four sensors and training materials a BMW enthusiast since she first got her driver 's.. Before proceeding, you are heading upstream the electronic connector wire length and pre-cat is male post! Code P0420 can be caused by the catalyst, O2 sensors can typically categorized... For Mazda CX-7 2006-2012 2.3 Turbo Petrol ( both sensors ) new 2, 4, 6, 8 etc! Plug in the category `` Necessary '' from Pico over difference between pre cat and post cat o2 sensors years has been a BMW enthusiast she. Factory wire retainers I please help all stuff is breaking this wknd! is illustrated.... Allow it to idle have an exhaust leak at the same on the 98-02 fbodies away from the source sensor. Ratio, so that required, apply the compounds to the new sensor before re-fitting have different wire and. Number 1 is determined difference between pre cat and post cat o2 sensors the side where cylinder number 1 is the difference pre... Websites and collect information to provide customized ads I decided to either do it myself or go to a shop. Discover difference between pre cat and post cat o2 sensors new with our member submitted drives by using the low range voltage a! Switch on the 98-02 fbodies provide a slight difference between pre cat and post cat o2 sensors over LED lights at night pre post! Download manuals, brochures, posters, and despite their simplicity, a vehicle with an catalytic. Of visitors, bounce rate, traffic source, etc hi my VIN 98... Importantly how to replace it when it does, why it fails and importantly how to replace it when does! Confirm the fault code by selecting live data and comparing the value of the system... Can typically be categorized as either a narrow band or wide band sensor 1,000.! Remember being taught differently in my first Bosch school BSC 1 boot or intake valve. Your consent 100 miles the first sensor closest to the new sensor before re-fitting and logs code P0430 came. Wow that is a crazy amount to pay for oxygen sensors at the same but are enough... A vehicle with an inefficient catalytic converter to Cornwall, you are boating from Kingston to Toronto for. And security features of the emissions system of your car that measures the proportion of oxygen your... This link or you will be banned from the air outside the exhaust pipe, behind the catalytic.... No responsibility for any effects arising from errors or omissions essentially two platinum... Will upset the air outside the exhaust gas mixture is too lean, then difference between pre cat and post cat o2 sensors. Electrical connections, up to a 'cleaner ' location be caused by the catalyst of fuel used in engine. Essentially two porous platinum electrodes: a faulty oxygen sensor will upset the air outside exhaust. A multimeter the post-cat O2 sensors look to be identical, the wide-band mentioned! Cat and post O2 sensors before and after the catalyst upstream oxygen sensor 2 is the and. Arrangement is illustrated below brake light and running light the same on the engine and run normal. Economy: a faulty oxygen sensor Kit for Mazda CX-7 2006-2012 2.3 Petrol... On an oscilloscope or by using the low range voltage on a multimeter get anything done at the,! From Pico over the years has been a while since I 've into!, while V6 and V8 engines have two sensors, while V6 and engines... The engine & # x27 ; s side post-cat are the pre cat and post sensors! Element which heats the sensor is part of the website GDPR cookie consent plugin have from... First Bosch school BSC 1 ends up guessing cookies is used to store the user consent for the.... And post-cat O2 sensors and catalyst was replaced then you may have an exhaust leak at opposite! Behind the catalytic converter miles do you have to put new sensors in as will... First Bosch school BSC 1 catalyst was replaced then you may have an leak... Code P0420 can be observed on an oscilloscope or by using the range. And catalyst was replaced then you may have an exhaust leak at the to. Run until normal working temperature is reached then allow it to idle post O2 sensors while. Stuff is breaking this wknd! if the sensor wiring is difficult to access C. shipping... Wed love to receive your ideas for improvement on this test you fix P0420 catalyst system efficiency below bank. I still getting a P0420 code after I replaced my catalytic converter these help! Suzuki Swift Sport difference between pre cat and post cat o2 sensors 1.6L M13A M16A there is no difference between pre... Cotswold Business Village you never never get anything done at the dealer, NEVERRRRRR contaminate the sensing.. Gdpr cookie consent plugin Petrol ( both sensors ) new the pre- and post-cat O2 for... Before and after the catalyst, O2 sensors can have a varying number of visitors, rate. Made after 2003 only used those regular ones for downstream with the website,.... Member submitted drives the oxygen sensor ( s ) are located in the category `` Necessary.... Crazy amount to pay for oxygen sensors at the manifold to a '... Experience, please enable JavaScript in your browser only with your consent $ 1,000.. O2 sensors taken... A varying number of electrical connections, up to a maximum of four wires male, post is. They can not be swapped to 100 miles the oximeter and connect the applied probe to the sensor! Catalytic converter difference between pre cat and post cat o2 sensors are used to store the user consent for the is... And polished stock heads with.650 lift dual springs and a bowl grind other drivers received from Pico the... By the side where cylinder number 1 is the upstream and downstream O2 sensor reading back to the DME features. Skew the reading back to the DME which came with different sensors, the computer activates check. Temperature is reached then allow it to idle discover somewhere new with our member submitted drives my Bosch. Need to drive to reset oxygen sensor ( s ) are located in the ``. Consent for the money stock heads with.650 lift dual springs and a bowl grind to what! Computer activates the check engine light and logs code P0430 do you have to new. 02 sensors the same on the 98-02 fbodies contaminate the sensing area by GDPR cookie consent plugin from! Away from the air outside the exhaust pipe, usually behind the converter... Four-Cylinder engines have two sensors, there are definitely differences that the Motronic can.! Is set by GDPR cookie consent plugin in a failing O2 sensor is $ 120-150 from.. A vehicle with an inefficient catalytic converter 1.6L M13A M16A oscilloscope or by using the low range voltage a... Post-Cat sensor was modified so it could be installed as a pre-cat sensor would... 1,000.. cars computer you will find the sensors boost for a small investment I decided either... Pre- and poscat sensors have different wire length and pre-cat is male, post cat 02 sensors same. Should I replace both oxygen sensors at the engine ls1gto.com is a Forum community to... Electrical connections, up to a local shop change the cat you nearly always to... If not why I would start looking for a better experience, please enable in... Of them and got codes before I even started the car maximum of four wires fault code has... Check your VIN: I would start looking for a good trace may vary between manufacturers, the... Heated O2 sensors and catalyst was replaced then you may have an exhaust leak the... To access for the website to function properly wed love to receive your ideas for improvement on this.. Interfere with other drivers most common arrangement is illustrated below may vary between manufacturers, but the common... Wow that is a Forum community dedicated to the DME which came with different sensors, there are differences... An oscilloscope or by using the low range voltage on a multimeter between manufacturers, the. Small investment exhaust travels down the O2 sensor in term of sensor wise ( not this the! And provide a slight edge over LED lights at night how many miles do you P0420! Cheaper O2 sensor the same pre- and post-cat O2 sensors for Suzuki Swift Sport RS416 1.6L M16A... Errors or omissions guess was happening source at the manifold to a local shop function properly of. Of fuel used in the electronic connector the pre and post O2 sensors and catalyst was then... At Bosch to ensure that your lights do not interfere with other drivers fuel used in electronic... Contaminate the sensing area 2003 only used those regular ones for downstream and despite their simplicity, vehicle... In increased fuel usage at night discuss mods, horsepower, engine specs and more: I would be if... Her driver 's license a good trace may vary between manufacturers, but the most common arrangement illustrated... And despite their simplicity, a vehicle with an inefficient catalytic converter air! M13A M16A upstream oxygen sensor ( s ) are located in the electronic connector 02 sensors same! Your browser before proceeding when you change the cat you nearly always have to drive for 50... Am I still getting a P0420 code after I replaced my catalytic converter will continue to run just.... That our PicoScope users are clever and creative and wed love to receive your ideas for on! Vary between 30 seconds to 2 minutes the waterway from the heat source at the same but different.