2012 Chevy Cruze O2 Sensor LocationSensor 2 monitors emissions after the catalytic converter. 4 — Outlet of the catalytic converter. Check if this fits your 2012 Chevrolet Cruze Application: Upstream sensor (located before catalytic converter) Notes: Actual OE Part, Narrowband. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. Sensor 2 is right by the Catalytic Converter, which produces a ton of heat. The oxygen sensor in your Chevy Cruze, often called the O2 sensor, measures the oxygen levels in the exhaust of your car. Locate the oxygen sensor on the exhaust manifold. The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V. Walker Direct Fit Oxygen Sensor - 350-33004 Part #: 350-33004 Line: WLK ☆☆☆☆☆ (0) Select a store to see pricing & availability or search by City & State or Zip: Attachment Method: Screw-In Connector Shape: Oval Heated: Yes Compare Walker Direct Fit Oxygen Sensor - 350-33014 Part #: 350-33014 Line: WLK ☆☆☆☆☆ (0). See full list on mechanicbase. Locate the oxygen sensor on the exhaust manifold. 91K subscribers Subscribe 149 Share 13K views 1 year ago This is how to change to O2 sensors on my 2011. Set of 2 Upstream and Downstream Oxygen Sensor Replacement for Chevrolet Cruze 2011-2014 Sonic 2012-2014 Saab 9-5 2010-2011 23 $4999 FREE delivery Fri, Feb 3 Or fastest delivery Thu, Feb 2 MANATEE 234-4528 213-4698 55572216 250-24612 Downstream Oxygen Sensor Compatible with Chevy Cruze Limited Sonic Trax,Heated Downstream Righ O2 02 Sensor 1 $2799. Disconnect the oxygen sensor harness. How to Replace the oxygen sensor on the Chevrolet Cruze 2011 to 2015 Haynes Manuals 99. The front (upstream) sensors measure the. 0:00 / 3:51 How to Replace the oxygen sensor on the Chevrolet Cruze 2011 to 2015 Haynes Manuals 99. 2012 Chevrolet Cruze - Oxygen Sensor Showing Results Recommended For Your: 2012 Chevrolet Cruze Clear Vehicle Filter Search for Another Vehicle 1 - 22 of 22 results for Oxygen Sensor Compare All Pick Up in Store Ship to Home Sort By: Compare Walker Direct Fit Oxygen Sensor Part #: 350-34114 Line: WLK ☆☆☆☆☆ (0). Unscrew the O2 sensor with a wrench. To find Your upstream oxygen sensor (the one before the catalytic converter), take a look under the hood. The front sensor (s) will be located under the hood, on the exhaust, very close to the engine. The downstream sensor might require you to get under the engine to disconnect it. The one in the exhaust manifold will be bank 1 sensor 1, behind the catalytic converter is bank 1 sensor 2 on the image. This code is closely related to P0031 (same issue, sensor 1 instead of 2). The sensor (s) close to the engine are sometimes called “pre-cat”, being located before the catalytic convertor. 3439 2 Top Answer Mike E January 20, 2021 The bank 1 sensor 1 location is the sensor on the catalytic converter. P0037 is a generic OBD II trouble code, which means that it has the same meaning for the Chevy Cruze as it would for any other car or truck. Exhaust flows through the O2 sensor vent holes (in the steel housing) and across the sensing element and ambient air is drawn through the wire lead cavities where it is trapped in a small chamber in the center of the sensor. 💪【 O2 oxygen sensor socket,o2 sensor chevy cruze 2012 upstream,o2 sensor for 2012 chevrolet cruze mainstream,12499186 o2 sensor,2013 chevy cruze oxygen sensor upstream,o2 sensor 2012 chevy cruze】 Specifications for this item See more Frequently bought together + + Total price: bosch 16735 bosch 16737 oxygen sensor o2 sensor 2. O2 runs tests at different operating conditions depending on which code needs to run to pass the monitor. Diagnosing this code is relatively straightforward. This is slightly to the right of Your oil dipstick. The sensor can measure concentrations of 10 to 10, 000 ppm. Business listings of Oxygen Analyzer, O2 Analyzer manufacturers, suppliers and exporters in Navi Mumbai, ऑक्सीजन एनालाइजर विक्रेता, नवी मुंबई, Maharashtra along with their contact details & address. How to Replace the oxygen sensor on the Chevrolet Cruze 2011 to 2015 Haynes Manuals 99. Locate the oxygen sensor on the exhaust manifold. Nakhon Sawan is located between the Central and Northern regions. Chevy Cruze O2 Sensors - YouTube 0:00 / 3:04 Chevy Cruze O2 Sensors Mr95Kenny 2. There are two O2 sensors in your vehicle. Locate the O2 sensor to be changed. 100 Volts to a maximum of 1 Volt of direct current that is sent directly to the PCM. 91K subscribers Subscribe 149 Share 13K views 1 year ago This is how to change to O2. New to the thread and am having what appears to be an O2 sensor issue with my 2012 Cruze 2LT 1. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. I have the following codes: P0030 HO2S Heater Control Circuit (B1S1) P0132 O2 Sensor Circuit High Voltage (B1S1) P0134 O2 Sensor Circuit No Activity Detected (B1S1) P0135 O2 Sensor Heater Circuit (B1S1) P0237 Turbocharger Boost Sensor A Circuit Low. P015B: O2 sensor Delayed Response - Lean to Rich Bank 1 Sensor 1 P1101: Intake Air Flow System Performance P2270: O2 Sensor Signal Stuck Lean - Bank 1\, Sensor 2 I need to ask him what symptoms he is experiencing (I think maybe some rough idle, maybe loss of power). It indicates that the Cruze has a lean condition. The one in the exhaust manifold will be bank 1 sensor 1, behind the catalytic converter is bank 1 sensor 2 on the image. The downstream sensor is especially susceptible to this problem Here’s how to find a short in the wiring harness (Youtube). It is usually caused by a bad oxygen sensor, or a wiring issue. I would like to know where the are. I am working on a 2013 Chevy Cruze Tubo that is getting a couple of engine codes. Check if this fits your 2012 Chevrolet Cruze Application: Upstream sensor (located before catalytic converter) Notes: Actual OE Part, Narrowband. CHEVROLET CRUZE DOWNSTREAM OXYGEN SENSOR REPLACEMENT LOCATION OXYGEN SENSOR 2 REPLACEMENT Auto Repair Guys 109K views 3 years ago How to Diagnose and Fix a Lean Condition - Chevy. In the second pic, I copied and pasted from the removal and replacement page. Disconnect the negative battery terminal. 3 Bedroom House for sale in Ban Rai, Nakhon Sawan. 3K subscribers Subscribe 30K views 2 years ago Do you need to Replace the oxygen sensor on your. The most obvious one that You will notice is black smoke coming from under the engine hood. 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. The downstream oxygen sensor is located behind the engine on the exhaust pipe, facing up. If the PCM injects too much, the O2 sensors will let it know and the PCM responds by injecting less. The sensor may connect to the intake manifold with a vacuum hose or directly, by sitting on top of the intake manifold. The sensors will have 1-4 wires on them The front sensor (s) will be located under the hood, on the exhaust, very close to the engine The rear one (s) will be located under the vehicle, directly after the catalytic convertor The sensor (s) close to the engine are sometimes called “pre-cat”, being located before the catalytic convertor. Something wrong with the car, I doubt it. The code will set when your car’s primary computer—also called the powertrain control module (PCM)—detects that, for a given period of time, the voltage signal from the rear O2 sensor is too high. Chevy Cruze O2 Sensors - YouTube 0:00 / 3:04 Chevy Cruze O2 Sensors Mr95Kenny 2. The Bank 1 portion of the code refers to the side where the #1 cylinder is located. A vehicle may have two to five oxygen sensors, and sometimes even more. This code will often appear with P0171. CHEVROLET CRUZE DOWNSTREAM OXYGEN SENSOR REPLACEMENT LOCATION OXYGEN SENSOR 2 REPLACEMENT Auto Repair Guys. Using the oxygen sensor socket, remove the oxygen sensor. Recommended video What causes O2 sensors to fail in Chevy Cruze?. Replaced - Answered by a verified Chevy Mechanic P015B O2 sensor delayed response - lean to rich Bank 1 Sensor 1. This O2 sensor provides information about. The downstream sensor can be found simply by looking down behind the engine and you will notice a large sensor protruding from the exhaust pipe. Downstream sensors Bank 1 Sensor 2 and Bank 2 Sensor 2 can be accessed from under the vehicle. This may require a bit of force. Also an adapter for the O2 sensor, screw that in and measure the back pressure at idle, tells instantly if there is a problem, should be less than 1 psi, but can't find this spec in the Cruze manual, so you are suppose to find a Cruze that is good and get the readings off of that. 3439 2 Top Answer Mike E January 20, 2021 The bank 1 sensor 1 location is the sensor on the catalytic converter. This means that you need to look up the firing order for your particular model year and engine. Disconnect the O2 sensor. Diagnostic trouble code (DTC) P0138 stands for O2 Sensor Circuit High Voltage (Bank 1, Sensor 2). Bank #1 is the side of the engine that contains cylinder #1. 6 Hex Size: 22mm $14199 Free In-Store or Curbside Pick Up SELECT STORE Home Delivery. To find Your upstream oxygen sensor (the one before the catalytic converter), take a look under the hood. Bank 2 Sensor 2 is the second sensor on the engine's exhaust pipe (Downstream) on Bank 2, usually behind the catalytic converter. These oxygen or O2 sensors are located between the bank 1 cylinder head and the corresponding catalytic converter. CHEVROLET CRUZE DOWNSTREAM OXYGEN SENSOR REPLACEMENT LOCATION OXYGEN SENSOR 2 REPLACEMENT Auto Repair Guys 109K views 3 years ago How to Diagnose and Fix a Lean Condition - Chevy. Do not repair the wiring, connector or terminals. 3K subscribers Subscribe 30K views 2 years ago Do you need to Replace the oxygen sensor on. Oxygen Sensor. The province, therefore, serves as a ‘gateway to the Northern region,’ as well as an important. Look up which side of the engine bank 1 is on If it’s an inline engine (almost all 4 cylinder motors), you don’t need to worry about which side it’s on, since there’s only one exhaust manifold. On most in-line engines, the Bank 1 sensor 1 will be located at the engine’s front side, near the cylinder head. Find local businesses, view maps and get driving directions in Google Maps. 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). With P0037, the O2 sensor is informing you that the heater circuit resistance is lower than the normal operating range. The following parameters may be helpful guideline for when to replace your oxygen sensors: Model years from the mid-1990s to present day, replace O2 sensors every 100,000 miles Model years from the mid-1980s to mid-1990s with heated three- and four-wire sensors, replace O2 sensors every 60,000 to 70,000 miles. The Cruze’s computer uses the oxygen sensor to measure the amount of O2 gases in the exhaust. Check if this fits your 2012 Chevrolet Cruze Application: Upstream sensor (located before catalytic converter) Notes: Actual OE Part, Narrowband. The downstream sensor is identical to the upstream sensor in appearance except for a shorter black connector. Repair and diagnostic steps may vary depending on the specifications of your vehicle. นครสวรรค์, Amphoe Lat Yao, Nakhon Sawan, Thailand 60150. MQ-7 CO Carbon Monoxide Coal Gas Sensor Module detects the concentrations of CO in the air and outputs its reading as an analog voltage. O2 Sensor #1 (Lambda - pre-DPF) - Located at the entrance to the DPF unit, below NOX#1 and EGT#1 sensors. The air fuel sensor stays in rich biased mode for too long. The car is idling very rough to the point where it's shaking the car and feels like it wants to stall out (Headlights flicker). Is Bank 1 Sensor 1 Upstream?. You'll see the sensor below the engine, on the exhaust manifold, with a wire (likely white) coming from it. 3K subscribers Subscribe 30K views 2 years ago Do you need to Replace the oxygen sensor on your. O2 Sensor #1 (Lambda - pre-DPF) - Located at the entrance to the DPF unit, below NOX#1 and EGT#1 sensors. New to the thread and am having what appears to be an O2 sensor issue with my 2012 Cruze 2LT 1. Apply anti-seize lubricant to the threads of the new sensor. Do not touch the sensor or the heat shield until the engine cools down. Do not touch the sensor or the heat. Chevy Cruze O2 Sensors - YouTube 0:00 / 3:04 Chevy Cruze O2 Sensors Mr95Kenny 2. The downstream oxygen sensor is located behind the engine on the exhaust pipe, facing up. House for sale, consisting of 3 bedrooms located at Ban Rai,. Chevy Cruze P0132 Symptoms. 99 Wire Quantity: 4 Heated: Yes Product Type: Application Specific Oxygen Sensor Type: Narrow-Band Housing Material: Metal Connector Gender: Female Mounting Type: Threaded Wiring Harness Overall Length (in): 21. Chevy Cruze: P0037 Symptoms. Disconnect the oxygen sensor harness. I have replaced oxegen sensor 1 and did not fix problem. Usually just replacing the O2 sensor will take care of this issue; if it doesn’t, further testing will be necessary. The downstream O2 sensor in Cruze is located further down the exhaust system, after the catalytic converter, and is responsible for measuring the level of pollutants passing through the catalytic converter. Also an adapter for the O2 sensor, screw that in and measure the back pressure at idle, tells instantly if there is a problem, should be less than 1 psi, but can't find this spec in the Cruze manual, so you are suppose to find a Cruze that is good and get the readings off of that. Here is a guide to help you change the sensor out step by step with diagrams below to show you on your car https://www. Repair and diagnostic steps may vary depending on the specifications of your vehicle. The one after the converter is sensor 2. Handle the oxygen sensor carefully. Caution: When Using a DMM Always use a digital multimeter with a minimum 10 megaohms of impedance, to prevent damage to sensitive electronic and electrical devices in your vehicle. P112c Unknown Trouble Code Description. Do not use cleaning solvents of any type. This is due to the fact that O2 sensors are under the chassis where they are subject to punishment from road debris, and they are subjected to a lot of exhaust heat. Screw in the new O2 sensor by hand and tighten it up with a wrench. The oxygen sensor, sometimes called an O2 sensor, is a device mounted in the exhaust system that constantly monitors the oxygen content in the gases that exit the engine. Remove the negative clamp from the battery. How to Replace Downstream Oxygen (O2) Sensor 2011-2015 Chevrolet Cruze - YouTube 0:00 / 3:27 How to Replace Downstream Oxygen (O2) Sensor 2011-2015 Chevrolet Cruze TRQ 147K. I hope you enjoyed this article and now have the knowledge to determine which O2 sensor you should replace to fix your car issue. 1 — Typical O2 Sensor located in the exhaust manifold Fig. 1 — Typical O2 Sensor located in the exhaust manifold Fig. This is due to the fact that O2 sensors are under the chassis where they are subject to punishment from road debris, and they are subjected to a lot of exhaust heat. I recommend pressing the connector in, then pressing the tab down, then pulling it out. This is owes to the fact that O2 sensors are under the chassis where they are subject to punishment from road debris, and they are subjected to a lot of exhaust heat. Walker Direct Fit Oxygen Sensor - 350-33004 Part #: 350-33004 Line: WLK ☆☆☆☆☆ (0) Select a store to see pricing & availability or search by City & State or Zip: Attachment Method: Screw-In Connector Shape: Oval Heated: Yes Compare Walker Direct Fit Oxygen Sensor - 350-33014 Part #: 350-33014 Line: WLK ☆☆☆☆☆ (0). Pull the hood release under the dashboard on the driver's side. 2012 Chevrolet Cruze - Oxygen Sensor Showing Results Recommended For Your: 2012 Chevrolet Cruze Clear Vehicle Filter Search for Another Vehicle 1 - 22 of 22 results for Oxygen Sensor Compare All Pick Up in Store Ship to Home Sort By: Compare Walker Direct Fit Oxygen Sensor Part #: 350-34114 Line: WLK ☆☆☆☆☆ (0). Like (1) Leave your answer Name. For example, repair steps for a P015B code in a Chevy Cruze may vary from the repair steps for a P015B in a Nissan Sentra. When the Cruze has low O2 sensor voltage at B1S1, it’ll trigger P0131. This information is used by the engine computer. The downstream O2 sensor in Cruze is located further down the exhaust system, after the catalytic converter, and is responsible for measuring the level of. You'll see the sensor below the engine, on the exhaust manifold, with a wire (likely white) coming. The oxygen sensor in your Chevy Cruze, often called the O2 sensor, measures the oxygen levels in the exhaust of your car. It uses this data to tune the engine on the fly. You will see that it only indicates two. 2012 Chevy Cruze vin 1G1PG5SC8C7306754 OBD codes p0171 p0106 p1101 Fuel pressure 45psi idling very low I feel Also has a massive vacuum leak. How to Replace Downstream Oxygen (O2) Sensor 2011-2015 Chevrolet Cruze - YouTube 0:00 / 3:27 How to Replace Downstream Oxygen (O2) Sensor 2011-2015 Chevrolet Cruze TRQ 147K. The sensors are located either underneath the hood or underneath the car. If the PCM injects too much, the O2 sensors will let it know and the PCM responds by injecting less. P015B O2 sensor delayed response - lean to rich Bank 1 Sensor 1. WHERE IS UPSTREAM DOWNSTREAM OXYGEN SENSOR Electrical Car Repair LIVE 207K subscribers Subscribe 166 Share 18K views 3 years ago CHEVROLET CRUZE OXYGEN. Original Part#: 55583113, New Part#: 55598259. Sensor 2 monitors emissions after the catalytic converter. 2012 Chevrolet Cruze - Oxygen Sensor Showing Results Recommended For Your: 2012 Chevrolet Cruze Clear Vehicle Filter Search for Another Vehicle 1 - 22 of 22 results for Oxygen Sensor Compare All Pick Up in Store Ship to Home Sort By: Compare Walker Direct Fit Oxygen Sensor Part #: 350-34114 Line: WLK ☆☆☆☆☆ (0). It’s usually the Oxygen Sensor located directly after the converter. An Oxygen sensor that is between the catalytic converter. Oxygen sensors are located before and after the catalytic converter. Find info on Wholesale Trade companies in Lat Yao, including financial statements, sales and marketing contacts, top competitors, and firmographic insights. For instance, an oxygen sensor at bank 1 - sensor 1 would be: Bank 1- Side of the engine with the first cylinder in the firing order. Park the Chevrolet on level ground and set the parking brakes. In the first picture above, sensor 1 is shows or identified with a number 2. Sensor 1- Sensor 1 would be the first O2 sensor in the line of sensors starting with the exhaust manifold and making its way back to the exhaust pipe. On most front-wheel-drive models with V6 engines, this sensor will be on the backside against the firewall. Bank 2 means it is at the engine side with cylinder numbers 2, 4, 6, 8, etc. 28K subscribers Subscribe 60K views 2 years ago *Check out the tools we used below. Tritech is also authorized sales and service representative for world renowned Gas Detection. Actual OE oxygen sensor. The rear one (s) will be located under the vehicle, directly after the catalytic convertor. When there is no signal from this oxygen sensor, the engine will not be able to run at optimal efficiency, and you’ll. For example, repair steps for a P015B code in a Chevy Cruze may vary from the repair steps for a P015B in a Nissan Sentra. Downstream sensors Bank 1 Sensor 2 and Bank 2 Sensor 2 can be accessed from under the vehicle. Some codes run on decel down a long hill, some want to see quite a few other conditions occur before the diagnostic will run. How to Replace Downstream Oxygen (O2) Sensor 2011-2015 Chevrolet Cruze - YouTube 0:00 / 3:27 How to Replace Downstream Oxygen (O2) Sensor 2011-2015 Chevrolet Cruze TRQ 147K. The one after the catalytic converter, which is the downstream sensor, is Sensor 2. Narrowband Oxygen Sensor OEM equivalent design Direct fit oxygen sensor. If these are the only two codes present, fixing what is causing P0037 will more than likely clear the P0171. 1: Location No. This information is used by the engine computer to determine the correct air-to-fuel ratio for your engine. In the first one, I circled the two sensors and identified which is sensor 1 and which is 2. The main purpose of downstream O2 sensor is to ensure that the catalytic converter is functioning properly. Usually just replacing the O2 sensor will take care of this issue; if it doesn’t, further testing will be necessary. The sensors will have 1-4 wires on them The front sensor (s) will be located under the hood, on the exhaust, very close to the engine The rear one (s) will be located under the vehicle, directly after the catalytic convertor The sensor (s) close to the engine are sometimes called “pre-cat”, being located before the catalytic convertor. Most rear-wheel-drive cars and pickups will have this sensor on the passenger side. The downstream O2 sensor in Cruze is located further down the exhaust system, after the catalytic converter, and is responsible for measuring the level of pollutants passing through the catalytic converter. 2: Location No. 3: Location No. O2 runs tests at different operating conditions depending on which code needs to run to pass the monitor. Press the connector and pull it away to unplug the oxygen sensor. Accelerating is very difficult as well and the check engine is on of course. If the car is having issues with the catalytic converter then it will cause a number of issues. I am working on a 2013 Chevy Cruze Tubo that is getting a couple of engine codes. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Handle the oxygen sensor carefully. This important data helps ECU adjusts the air-fuel mixture for optimum efficiency. Find here Oxygen Analyzer, O2 Analyzer, O2 Monitor, suppliers, manufacturers, wholesalers, traders with Oxygen Analyzer prices for buying. The O2 sensors accomplish this by producing anywhere from 0. P0140: O2 Sensor → No Activity Detected →Bank 1 Sensor 2. How to Replace the oxygen sensor on the Chevrolet Cruze 2011 to 2015 Haynes Manuals 99. 2 — Left and right banks of a V-type engine Fig. Diagnostic trouble code (DTC) P0138 stands for O2 Sensor Circuit High Voltage (Bank 1, Sensor 2). Instrument manufacturer Riken Keiki Co. These oxygen or O2 sensors are located between the bank 1 cylinder head and the corresponding catalytic converter. Unplug the connector of the sensor. Tritech believes in philosophy of providing complete and comprehensive after sales service to customers. Connect the electrical plug of the new sensor. There may be a third sensor downstream, if that is the problem, a P2274 is set. CHEVROLET CRUZE OXYGEN SENSOR LOCATION. 0:00 / 4:05 Intro How to Replace an Oxygen Sensor Chevy Cruze The Auto Teacher 3. The sensor located before the catalytic converter is the upstream sensor, also known as Sensor 1. The sensor may connect to the intake manifold with a vacuum hose or directly, by sitting on top of the intake manifold. 4: Location No. If it doesn't inject enough, they'll make it aware of it and the PCM will inject more. 99 Wire Quantity: 4 Heated: Yes Product Type: Application Specific Oxygen Sensor Type: Narrow-Band Housing Material: Metal Connector Gender: Female. Replace the oxygen sensor if the pigtail wiring, connector, or terminal is damaged. In the first picture above, sensor 1 is shows or identified with a number 2. Part#: 12644786 Exhaust Gas Temperature Sensor #1 (pre-DPF) - Next to (right of) NOX#1 Sensor, between Turbo and DPF. The trapped ambient air (in the chamber) is heated by the exhaust, forcing the oxygen ions to produce (energy) voltage. There are also some less likely problems that can cause P0132. The downstream oxygen sensor is located behind the engine on the exhaust pipe, facing up. The task of this sensor is to measure the composition of raw exhaust fumes. It was matter of time as customers made us to develop, manufacture and sell indigenous gas detection system. The P2270 DTC refers to downstream sensor (after the catalytic converter), sensor #2 on bank #1. With P0037, the O2 sensor is informing you that the heater circuit resistance is lower than the normal operating range. The following parameters may be helpful guideline for when to replace your oxygen sensors: Model years from the mid-1990s to present day, replace O2 sensors every 100,000 miles Model years from the mid-1980s to mid-1990s with heated three- and four-wire sensors, replace O2 sensors every 60,000 to 70,000 miles. Application: Downstream sensor (located after catalytic converter) Notes: Aftermarket part, Bank 1 Sensor 2 (B1S2). 3 — Exhaust collector (where more than 1 pipe joins together) Fig. com/articles/how-to-replace-an-oxygen-sensor Check out the diagrams (Below). A failing oxygen sensor in your Cruze can cause the computer to set the fuel ratio too lean or too rich, which can. The 1st sensor is located closest to the engine, and the last is located toward the rear of the exhaust system. April 10, 2020 The downstream oxygen sensor is located behind the engine on the exhaust pipe and it will be turned up looking at the sky. When the signal from the O2 sensor is detected by the PCM as being stuck lean or biased lean, this DTC is set. The Bank 1 portion of the code refers to the side where the #1 cylinder is located.