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Bank 2 sensor of Technology
Bank 1 and bank 2 have similar sensors. 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. Bank 2, on the other, has its own sensor 1, located near the engine ...The upstream O2 sensor is found before the catalytic converter, while the downstream O2 sensor is located after the catalytic converter. The upstream O2 sensor helps identify the vehicle's fuel trim, which helps the engine computer calculate the ideal air-fuel ratio. Contentshide. 1.2010exl said: Bank 1 is against the fire wall and bank 2 is toward the radiator. It seems a little illogical. But that isthe way honda does it. if you disconnect the O2 sensor electrical connector then start the car, you will see a few more codes pop up for that bank to prove it. Upstream is before the convertor and downstream is after the ...Dmoye Discussion starter. 6 posts · Joined 2023. #1 · Mar 16, 2023. New Here. I found a thread from 2013 that illustrated the pin out and wiring diagram for the 02 sensor Bank 2 Sensor One. I have an issue with Bank 2 sensor 2 wiring. Apparently the previous owner cut the harness side for some reason and spliced on 4 new wires and new connector.bank 2 sensor 1..... Driver side near exhaust manifold bank 1 sensor 2..... near cat converter, if you have dual exhaust and 2 cats, then it would be passenger side O2 near cat Sensor 1's help computer control fuel trim lean/rich feedback Sensor 2's test if cat is working and clean up exhaust emissions, they are also used in Long Term Fuel trimsP0331 stands for knock sensor circuit performance. This means the PCM has detected a problem with the knock sensor or its circuit. Some vehicles may be equipped with two knock sensors. Code P0331 pertains to the sensor on bank 2 (the opposite side of the engine where the #1 cylinder is located).Bank 1 is the cylinder bank near the firewall, Bank 2 is near the radiator. Sensor 1 is before the cat, sensor 2 is after the cat. underneath the car, look for the exhaust down pipe from bank 1. You should see the catalytic converter before the area where the two downpipes Y into one pipe. There is one cat on each down pipe.The sensor is located post the catalytic converter in bank 1 & is easily accessible (bank 1 is the side close to the firewall - used 2 jack stands to support the vehicle). As hmr1979 mentioned in an earlier post, run the vehicle for approximately 20 seconds before removing the O2 sensor & then disconnect the battery ( I disconnected …Hello all, first time poster. Looking for guidance on getting an 02 sensor changed. Vehicle is a 2003 SLE 3.0 L 1MZ-FE V6 Automatic. Problem: Check Engine Light on & TRAC Off Light on. AutoZone diagnostic produced three codes, P0155, all referring to Bank 2 Sensor 1.electrickrypt Discussion starter. 27 posts · Joined 2008. #1 · May 6, 2009. I have an O2 sensor that has gone bad so I went to get a diagnostic and it read Bank 1 Sensor 1. I know there are three O2 sensors but I am not sure which one is Bank 1 Sensor 1. I Googled and searched the forums and found nothing. Also checked the manual and nothing.No fix o2 Denso on my es330. Used a 234-4209 Universal. I had a zero voltage reading on my Bank 1, Sensor 2 from the OBD computer. This is for a 2004 Lexus ES330. I pulled the original sensor out, and the item number (from the factory unit), is Toyota 89465-33370. The universal Denso replacement number I used is 234-4209.There are typically two or four oxygen sensors in a vehicle, with Bank 1 referring to the side of the engine that contains cylinder 1 and Bank 2 referring to the opposite side. To identify which oxygen sensor is causing the P0132 code, refer to the vehicle's service manual or use a diagnostic tool to read the specific code.For the bank 1 sensor, you don't have to use the crazy extension method I used in the video. You can try different extensions/sockets, my method seemed easy for me. D The bank 2 sensor is really easy, you don't even have to take off the engine cover! It was actually better to keep the cover on, you don't get scrapes or get burned with the ...Labor: 1.0. To diagnose the P0050 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Sensor 2 generally refers to the post-catalytic converter sensor, or downstream sensor. This is the O2 sensor that is located after (downstream) the catalytic converter. This sensor is used to give feedback to the ECU regarding the health and efficiency of the catalytic converter. Therefore, Bank 1 Sensor 2 is typically located on the side of ...The oxygen sensor, also known as the O2 sensor, is a critical component of your vehicle's emissions system. It measures the amount of oxygen in the exhaust gases and sends this information to the engine control module (ECM).Where is the Bank 2 Sensor 1 Located? Bank 2 Sensor 1 is the first sensor closest to the engine (Upstream) on Bank 2. Bank 2 means it is at the side of the engine with cylinder numbers 2, 4, 6, 8, etc. Where is the Bank 2 Sensor 2 Located? Bank 2 Sensor 2 is the second sensor on the engine’s exhaust pipe (Downstream) on Bank 2, usually behind ...Bank 1, Sensor 2 is the downstream oxygen sensor in the exhaust behind the catalytic converter. The engine bank that contains cylinder 1 is called Bank 1. V6 and V8 engines have two banks and two catalytic converters, one for each. In such cases, the bank that contains cylinder number one is called "Bank 1.".P0018 should be considered an important code to diagnose and repair. The crank and cam sensors work in tandem to produce the ideal air/fuel ratio for your engine. When this timing is off, the engine will typically not run (or barely run). Here are the major symptoms of P0018 in the Q7: Failure to start.The P013B code stands for “O2 Sensor Slow Response–Lean to Rich (Bank 1, Sensor 2),” which means the powertrain control module (PCM) detects that oxygen sensor 2 in bank 1 is taking too long to switch from rich to lean. A malfunctioning O2 sensor, wiring issues, and a broken catalytic converter are some possible causes of the P013B code.O2 bank 1 sensor 1 is the driver's side, front O2 sensor, the one before the CAT... 06MonteSS / DiabLew Tune. www.diablewtune.com. 2014 Camaro 2SS-RS LS3, short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake, custom DiabLew Tune.P0160 code definition. Trouble code P0160 is set when no activity is detected on the bank 2 sensor 2 oxygen sensor circuit. Bank 2 refers to the side of the engine opposite of cylinder number one. Sensor 2 means that it is the second sensor in the exhaust, which is usually after the catalytic converter to monitor its efficiency.Diagnostic trouble code (DTC) P0327 stands for "Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor).". It is triggered when the powertrain control module (PCM) detects very low voltage readings from your vehicle's primary knock sensor circuit. Take note that the voltage value may vary depending on your vehicle's make and model.Welcome back to the channel in todays video i replace the second o2 sensorbank 2 sensor 1.merchandise : https://teespring.com/dbvz?pid=227Wheels visit: https...Lexus Mechanic: Daniel Chaidez. There are actually 4. 2 for each bank. Bank 1 is the side of the engine closest to the firewall and being sensor 2 its the downstream sensor or the one after the cat. Give me a minute to get you a diagram that shows that location. Ask Your Own Lexus Question.Again, determine which bank is which first or you’ll waste a lot of time and effort. O2 sensor 1/1 is the upstream sensor on Bank 1 (different for a Ford than for a Chevy or a Dodge), and O2 sensor 1/2 is the downstream sensor on Bank 1. O2 2/1 is upstream on Bank 2 and O2 2/2 is downstream on Bank 2.Nov 22, 2019 · So how can you tell which side is Bank 1 and which side is Bank 2. Bank 1 VS Bank 2 Oxygen Sensor. The right way to tell which side is Bank 1 and which side is Bank 2 by using the following method: Bank 1: It is the side which has the #1 cylinder. For instance, Cylinders 1 – 3 – 5 – 7. Bank 2: It is the side which has the #2 cylinder. For ...Optical sensors work by converting light into an electronic signal. The sensor is attached to a measuring instrument and an electrical trigger. When light strikes the sensor, it tr...Bank 1 is passenger side---but whoa!! It may be another issue. P0171 is lean condition code--bank 1 sensor 1---I believe Check the EGR tube--it is the metal tube between egr valve and exhaust manifold-also check the 2 rubber hoses coming off it real well for leaks--Also--a cracked exhaust header could cause this--Diagnostic trouble code (DTC) P2A01 stands for "O2 Sensor Circuit Range/Performance Bank 1 Sensor 2.". The code is logged once the PCM senses a voltage reading that's outside of a specific range, which usually points to a problem with the O2 sensor. The common causes of a P2A01 code include O2 sensor failure, exhaust leak, wiring issues ...Dec 17, 2022 · The oxygen sensor’s location is divided by position sensor 1, and sensor 2. A four-cylinder engine or inline six-cylinder engine has only one bank. So, all the oxygen sensors will be located on bank 1. “Bank 1 sensor 1” indicates the front sensor, while “bank1 sensor 2” indicates the rear sensor. A V6 and V8 engine has two banks ...Xiaomi launched a new flagship offering called the Xiaomi 12T pro that has a 200-megapixel sensor as its marquee feature Xiaomi just launched the 12T Pro, a flagship with a 200-meg...Sensor 1 is before the cat, sensor 2 is after the cat. underneath the car, look for the exhaust down pipe from bank 1. You should see the catalytic converter before the area where the two downpipes Y into one pipe. There is one cat on each down pipe. Bank 1 Sensor 2 will be located on the engine's rear down pipe after the cat.Good day to all need some help on the best way to get the 02 sensor off. Just went under and this thing is rusted on pretty good. I got the p0161 showing bank 2 sensor 2. Just went to a mom and pop muffler shop and the guy insisted it's the cat and wants over 300 to replace, could this be the...The bank 1 sensor 2 O2 sensor is a critical component in the exhaust system of modern vehicles, responsible for monitoring the air-fuel ratio and optimizing combustion efficiency. Understanding its technical specifications, replacement process, and the importance of regular maintenance can help ensure your vehicle’s engine runs smoothly and ...P0157 stands for "Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 2).". This code is triggered when the powertrain control module (PCM) detects a problem with the downstream oxygen sensor. A damaged oxygen sensor, exhaust leaks, and a lean running condition are possible reasons why this trouble code is set. Contentshide. In today’s rapidly advancing technological landscaThe P0060 code stands for "HO2S Heater ReReplacing NOX #2 sensor - 2013 Duramax. I gave the dea
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1-24 of over 2,000 results for "o2 sensor bank 2 sensor 2" Results. Check each product page for other buying options. ... Nifeida 234-4407 Oxygen O2 Sensor 2 Downstream Compatible with 02-07 Chevy Express Silverado Tahoe GMC Savana Sierra Yukon & 03-06 Hummer H2 Cadillac Escalade.Took it to Auto Zone and it said bank 1 o2 sensor. Now ive heard of MIL eliminators going bad before so if thats the case then that would trigger the CEL. But if bank 1 is the other o2 sensor then I guess i need to buy a new sensor to replace it. ... Bank 1 and bank 2 refers to an engine with a "V' configuration. Save Share. Like. Ray.This is how the term, bank 1 sensor 1, and bank 1 sensor 2, are derived. Pre catalytic converter sensors are used to monitor and correct the air fuel ratio of the engine and post catalytic sensors are used mainly as a diagnostic sensor. The most common types of 02 sensors used today, is the Zirconium Dioxide, to a lesser degree …The HO2S2-B1 (Heated Oxygen Sensor, Sensor 2 - Bank 1) is mounted in front of the Bank 1 (as described above) with a WHITE harness and connector on the radiator side. This is a lot easier to replace. The OEM Bosch sensor is13374 @ $120 while an OEM-compatible NGK/NTK is 24574 @ $95.Summary. The P0152 code stands for “O2 Sensor Circuit High Voltage (Bank 2, Sensor 1),” which typically means the pre-catalytic converter oxygen (O2) sensor’s voltage signal has been out of the set range for …Code P0159 is a powertrain code that indicates a specific sensor in the exhaust system (bank 2 sensor 2) is not performing as it should. When an oxygen sensor modulates slowly, it is an indication it is bad. This sensor monitors the catalyst efficiency for emissions purposes. What causes the P0159 code?10713 posts · Joined 2011. #2 · Mar 26, 2020. According to the manuals I have, bank 1 sensor 2 is on the back of the engine. . . 15" Ravine Rims w/ 235/75/15 Duratracs. DIY Spacer Lift + CRDSTU coils. JKS Quicker Disconnects. Rear swaybar semi-disconnect.By replacing bank 2 sensor 1 timely, you can restore your ford f150's engine performance and keep it running smoothly. Signs Of A Faulty Bank 2 Sensor 1 In Your Ford F150. Signs of a faulty bank 2 sensor 1 in your ford f150 are crucial to identify. The sensor plays a vital role in monitoring the air-fuel ratio.Re: bank 2 passenger? bank 1 driver?? o2 sensor talk. like i said, thats EGT sensor positions. As for EGT driver's side, you need to move the windshield wiper resevoir and take out the y pipe to do it. Ive never had to swap 02 sensors, so I wont be much help with that.Bank 2, Sensor 1. Jump to Latest Follow ... Bank 1 and bank 2. 2023 Traverse LT 3.6L 24,000 2013 Equinox 3.6L 125,000 2003 Trailblazer 4.2L 188,000 2010 Traverse 3.6L 193,000. Save Share. Like. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.Jan 6, 2023 · Downstream O2 Sensor (Bank 1 Sensor 2) O2 sensor 2 can also be called the downstream O2 sensor or bank 1 sensor 2. It is after the catalytic converter and before your muffler. It makes sure the catalytic converter is healthy and working properly. The catalytic converter should output a steady amount of oxygen so the voltage on O2 sensor 2 ...2010exl said: Bank 1 is against the fire wall and bank 2 is toward the radiator. It seems a little illogical. But that isthe way honda does it. if you disconnect the O2 sensor electrical connector then start the car, you will see a few more codes pop up for that bank to prove it. Upstream is before the convertor and downstream is after the ...RAVN4RED. 1065 posts · Joined 2013. #3 · Jan 21, 2018. On the 4-cylinder engine, both O2 sensors are on bank one: bank one, sensor 1, which is the air-fuel ratio sensor located before the catalytic converter. And bank 1 sensor 2, which is an 02 sensor located after the cat. It would be helpful if you post the codes that were found in the ...Bank 2, Sensor 1 is the one on top (not bottom) and front (not rear). Found a good diagram on hondapartscheap.com that shows the location of all 4 sensors. Borrowed the necessary slotted socket from Autozone (free with a refundable $30 deposit). Dealer price (in Dallas, TX) for the sensor was $175 + tax. Found at O'Reilly for $109--NTK #24346 ...OBD II fault code P0061 is defined as "Heated Oxygen Sensor Resistance (Bank 2 Sensor 3)", and is set when the PCM (Powertrain Control Module) detects an electrical resistance in the sensor control circuit that falls outside of predefined parameters. On engines with two cylinder heads, "Bank 2" refers to the bank of cylinders that does ...6051 posts · Joined 2010. #3 · Sep 2, 2011. Bank 1 is the side that has the #1 cylinder in it, so Bank 2 is the other side. Sensor 1 is the front sensor, which is important to engine function, sensor 2 is the after cat sensor that does not impact engine performance. So you have a problem with the FRONT sensor on the RIGHT side of the car.Dec 27, 2016 · 138 posts · Joined 2006. #1 · Dec 27, 2016. Read all the threads on the O2 sensors but wanted some advice on removing the Bank 2, Sensor 1. I see the Star Service Manual recommends a box wrench bit for removal. I've got the front end on jack stands and wanted to know if removal from under the car is the preferred method to get enough leverage ...P0054 is a diagnostic trouble code (DTC) for "HO2S Heater Resistance (Bank 1, Sensor 2)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .Diagnostic trouble code (DTC) P0158 stands for "O2 Sensor Circuit High Voltage (Bank 2, Sensor 2).". This means the O2 sensor 2 has been emitting a voltage signal above its normal range for a certain amount of time. Common causes of the P0158 code include a faulty oxygen sensor, a faulty oxygen sensor heater circuit, and a rich running ...In the Lexus IS250, Bank 2 Sensor 1 indicates the air fuel oxygen sensor, which You can find on the driver's side of the vehicle. If You get under the vehicle and remove the plastic cover, You should see it relatively visible on the exhauSTSystem. If You're receiving a diagnostic trouble code (DTC) through an OBD-II scan tool, You'll want to get this changed as soon as possible. Oxygen sensors ...Sensor 2/2 or O2s 2/2. Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side. On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1. Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)On this emissions package, 4 sensors are used: 2 upstream (referred to as 1/1 and 2/1) and 2 downstream (referred to as 1/2 and 2/2). With this emission package, the right upstream sensor (2/1) is located in the right exhaust downpipe just before the mini-catalytic convertor. The left upstream sensor (1/1) is located in the left exhaust ...As said above, bank 1 sensor 2 is the rear sensor, behind the catalytic. bank 1 sensor 1, the front one near the engine is, depending on the model year, an Air/Fuel sensor (2000 and after) or a regular o2 sensor (before 2000) Only get DENSO sensor. Toyotas are known to be picky with other brandsOn 2/7/19 I threw a code P0131 bank one sensor one "circuit low voltage' according to AutoZone. I can get a wrench on the sensor, but the plug connector is secured above the midpoint of the transmission, above a bracket to another cable, which I cannot unfasten - not to mention the lack of space or visibility. ...The 1st sensor is located closest to the engine, and the last is located toward the rear of the exhaust system. Generally, if we are talking about O2 sensors: Sensor 1 = Before Catalytic converter Front (Upstream O2 sensor) Sensor 2 = After Catalytic Converter Rear (Downstream O2 sensor) Some diesel engines have many exhaust temperature sensors ...138 posts · Joined 2006. #1 · Dec 27, 2016. Read all the threads on the O2 sensors but wanted some advice on removing the Bank 2, Sensor 1. I see the Star Service Manual recommends a box wrench bit for removal. I've got the front end on jack stands and wanted to know if removal from under the car is the preferred method to get enough leverage ...Your garage door sensors are an integral mechanism of your automatic garage door system, and the most common type of garage door sensor is called a Expert Advice On Improving Your ...This page provides information on the proper identification of engine bank 1 and engine bank 2 for correct A/F sensor and oxygen sensor replacement. Contains information that identifies engine bank 1 and engine bank 2 on the following engines: 1AZ-FE, 2AZ-FE, 2AZ-FE (PZEV), 1GR-FE, 2GR-FE, 2JZ-GE, 1MZ-FE, 3MZ-FE, 1UR-FE, 3UR-FE, 2UZ-FE, 5VZ-FE ...You might get better responses over on the Li
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redfury. 3002 posts · Joined 2010. #2 · Jul 20, 2014. Bank 1 sensor one is going to be the side of the motor that cylinders number 1,3 and 5 is located at, Bank 2 sensor 1 is going to be the side cylinder numbers 2,4 and 6 are on. Bank 1 sensor 2 is going to be the O2 sensor after the catalytic converter, and Bank 2 sensor 2 would be …NTK 22500 {#22109} Info. Fits Downstream Left; Bank 2 Sensor 2. Or Upstream Left; Bank 2 Sensor 1. Or Upstream Right; Bank 1 Sensor 1. Or Downstream Right; Bank 1 Sensor 2. I reject your reality & substitute my own... 2001 Explorer Eddie Bauer 5.0L V8 2WD. 2000 Monty 5.0L 2WD - 2000 Expl XLT 5.0L 2WD (sold)By definition, Bank 2 refers to the side of an engine with the cylinder firing orders 2, 4, 6, 8, 10, and 12. It is the opposite of the B1S1 (Bank 1 Sensor 1) location. Identifying the location of cylinder 2 pretty much tells you the location of Bank 2. But between rear-wheel and front-wheel drive automobiles, locating Bank 2 in the latter ...6051 posts · Joined 2010. #3 · Sep 2, 2011. Bank 1 is the side that has the #1 cylinder in it, so Bank 2 is the other side. Sensor 1 is the front sensor, which is important to engine function, sensor 2 is the after cat sensor that does not impact engine performance. So you have a problem with the FRONT sensor on the RIGHT side of the car.Alright after reading some more I figured out there is no Bank 2 for the Gen2 Prius. Bank 1 Sensor 1 = Upstream (pre-cat) Bank 1 Sensor 2 = Downstream (post-cat) So the SG2 was able to detect the downstream o2 sensor, but no values were detected for the upstream o2 sensor.Where is bank 2 sensor 1 located on the ford expedition? The o2 sensor in the Ford Expedition is located before the catalytic converter, on the side with cylinder. The O2 sensor lets the computer know if the fuel mix is burning rich (not enough oxygen) or lean (too much oxygen).Re: 2014 Maxima O2 sensor Bank 1, sensor 2 removal. Post by VStar650CL » Tue Sep 26, 2023 2:53 pm. B1S2 on a Max is the easy one, B2S2 is the one that's stuck up inside the J. The S1's are opposite, B1S1 requires removing the cowl or tilting the subframe, B2S1 is pretty open. Cut the wire and use a box wrench like this vid:bank 1 is drivers side, bank 2 is the passenger side, sensor 1 is the first sensor from the exhaust, 2 the next and so on. 06 Hemi QC AKA The Truck Best 1/4 [ 60 ft = 1.710] _ [ 1/8 mi = 7.61 @ 89.90 mph ] _ [ 1/4 mi = 11.98 @ 111.65 mph ]The O2 sensor on bank 2, position 2 monitors the catalyst efficiency of the catalytic converter on that bank. If the pre-catalyst O2 sensor sticks or switches between low and high voltage at a slow pace, code P0160 may be set. Pre-catalyst O2 sensors typically switch between low and high voltage one or two times per second.We put it on a computer and it came back saying that it needs a new oxygen sensor. The sensor is bank 2 sensor 1. Can anyone tell me where this sensor is located? Front driver side bank 2 sensor 1, rear driver side sensor 2, pass side is bank 1. This is an older thread, you may not receive a response, and could be reviving an old thread.Multiple 99-03 in pieces, will have one running soon! google search "6.7 Coffee Table Book". page 79 shows where they are along the frame/DPF. If i remember correctly Bank 1, Sensor 2 is between the DOC and SCR. it would be the second sensor from the front (front being where the down pipe flange is). 2011 CCLB DRW 4X4 bone stock, SOLD!bank 1 is the front of the engine, sensor 2 is downstream. so the code is for a voltage problem in the front downstream O2 sensor. either it's not plugged in properly, it's damaged/defective/worn out, or something is wrong with its location/position in the exhaust stream, causing a high voltage reading. this could also make the engine run lean ...A failing catalytic converter can affect the oxygen sensor readings and trigger the P0056 code. If the steps above have helped you identify the cause of your vehicle’s P0056 code reading the “HO2S Heater Control Circuit—Bank 2, Sensor 2” issue, you may finally proceed with actually fixing the problem.Welcome to A Midwest Family! Here are a couple tips I found would be helpful for someone who is going to change their o2 sensor! Hope this helps someone. ...To diagnose the P0050 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.P0141. For the rear o2 sensor. I've been running Unitronic Stage 2 with a catless downpipe for over 5K miles (25K total on the car) with no issues. A few questions below before I go out and buy a new sensor. These things aren't cheap $190 bucks a piece! Questions: - Isn't the tune supposed to tune out the rear o2 sensor so it doesn't throw a CEL?Bank two is radiator side, sensor one is upstream of the Cat; like you said mahatma. To reset the DTC, disconnect the + side of the battery, and leave it off for 30 seconds. - Daniel. Current: 2002 Pontiac GTP 40th …Again, determine which bank is which first or you'll waste a lot of time and effort. O2 sensor 1/1 is the upstream sensor on Bank 1 (different for a Ford than for a Chevy or a Dodge), and O2 sensor 1/2 is the downstream sensor on Bank 1. O2 2/1 is upstream on Bank 2 and O2 2/2 is downstream on Bank 2.28859 posts · Joined 2008. #2 · Apr 20, 2023. Bank 2 means that the O2 is sitting on the side of the engine that has the #2 cylinder. (Bank 1 would mean it's on the side of the #1 cylinder.) '91 Tracker 8V, 1.6L, 5 sp, 4wd, 2dr, conv, CAMI, horribly rusty.Brian Eslick from How to Automotive http://www.howtoautomotive.com takes you step-by-step through the process of replacing the bank 1 sensor 2 oxygen sensor ...Still showing Bank 2 Sensor 2 voltage around .850, while Bank 1 Sensor 2 hangs around .6 give or take, but not higher than .75. Still throwing the P0158, so I've ordered a replacement Denso sensor for Bank 2 Sensor 1 location. That is still the only code. Comes on within 5 minutes of driving... as I can clear the "pending code" on the move ... Where is bank 2 sensor 1 located on the ford