The code is triggered when:. Typically, the only symptom of P is going to be the service engine soon light. In some cases, there can be other symptoms as well. These symptoms include:. But, like anything that causes the service engine soon light to come on it is a good idea to have it fixed as soon as possible. A poor air fuel mixture going through the catalytic converter. Here are the most common issues that cause the P code in the Ford Explorer. They are presented in order somewhat of most to least likely to cause the problem.
Bank 1 VS Bank 2 – Sensor 1 & 2 O2 Sensor Location
It is possible to diagnose the P with a multimeter. If the light comes on, even for a second, you bogar 7000 explanation in tamil that you have a short circuit causing the P trouble code. Good luck finding whatever caused P in your Ford Explorer. If you have anything that you would like to add, please feel free to leave a comment below.
The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more Voltage to the sensor is to high wiring problem, think short Bad O2 sensor itself There are also some less likely problems that can cause P Bad Oxygen Sensor — The O2 sensor itself is one of the most likely reasons that P is triggering your service engine soon light.
See directly below. They are relatively affordable at Autozone or Amazon. Wiring Harness Issues — The wiring that goes to the front and rear oxygen sensors is very susceptible to damage. 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. Damage to the Terminal — The terminal that the oxygen sensor connects to the plug is also relatively susceptible to damage.
Wrong O2 Sensor — If you are getting P after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad. Explorer P Diagnosis It is possible to diagnose the P with a multimeter. Conclusion Good luck finding whatever caused P in your Ford Explorer.Oxygen sensors play a vital role in both engine management and emissions control.
Your Explorer can exhibit symptoms when the Oxygen sensor has gone bad. Or, it may exhibit none at all. Often enough, the only sign of the problem at all is the service engine soon light being on.
Most of the time, the check engine light will come on. The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad at least what the computer thinks is wrong. It is very rare for there to be a problem with an oxygen sensor, and not have the check engine light come on. More often than not, when an oxygen sensor in your Explorer goes bad, it will throw a diagnostic trouble code.
There are many oxygen sensor related codes. For instance, an oxygen sensor at bank 1 — sensor 1 would be:. A bad oxygen sensor can affect the mixture greatly. There could also potentially be raw fuel that enters the exhaust.
This fuel can hurt the catalytic converter. One of the most common symptoms that an oxygen sensor has gone bad is exhaust that does not smell good. This is especially true if the mixture ends up too lean.
While a rough running engine can be a sign of a bad oxygen sensor, it is often a sign of a misfire as well. Without a check engine light, it can be tough to lock down exactly what would cause the vehicle to fail, but oxygen sensors are one of the more common causes. It is smart to use a scan tool to determine whether or not there is an OBDII trouble code associated with any of the sensors.
Good luck diagnosing your Explorer! This means that you need to look up the firing order for your particular model year and engine.
Bad Smelling Exhaust One of the most common symptoms that an oxygen sensor has gone bad is exhaust that does not smell good.Testing the oxygen sensor commonly referred to as O2 sensors on your Ford 4.
Since the Ford 4. TIP 1: To take advantage of the testing info in this article, you'll need a scan tool. This scan tool must have Live Data capability. Now, you don't need the Ford factory scan tool since I've written this article for use with a generic scan tool Don't have a scan tool? Need a scan tool? TIP 2: If you have several diagnostic trouble codes, which are not oxygen sensor related for example, you have a MAF sensor code along with oxygen sensor codesyou need to diagnose the non-oxygen sensor codes first.
This is important, since there's a good chance that the component that's causing the non-oxygen sensor code has failed and is causing the PCM to think erroneously that the oxygen sensor or oxygen sensors have failed too, when they haven't. TIP 3: The testing procedure I'm gonna' show you here, is done with the oxygen sensors in action Therefore, take all necessary safety precautions and think safety all of the time.
The effects of a bad oxygen sensor can be very subtle since they usually do not cause serious drive-ability problems. Here are the most common symptoms:. If you've been wondering exactly what the heck each diagnostic trouble code means in lay man's terms, below I've added a few words beyond the official description of the code:.
You could run down to your neighborhood auto parts store and buy the oxygen sensors you need there, but you'll likely pay twice as much than online. As an Amazon Associate, I may earn a small commission from qualifying purchases from the Amazon product links from this website.
Your purchase helps support my work in bringing you real diagnostic testing information to help you solve the problem!How to change your oxygen sensor - o2 Ford Explorer
Page 1 Page 2 Page 3. Contents of this tutorial:. All Articles: 4. Applies To:. Ford Vehicles:. Do NOT follow this link or you will be banned from the site!Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. Visit us at 1AAuto. In this video, we're going to show you how to replace the downstream oxygen sensor on this Ford Explorer.
It has the 4. We show you on, I believe the passenger side; driver's side's the same procedure. We hope you like the video. Please click subscribe. Check out 1AAuto. Here are the items you'll need for this repair. Raise and support your vehicle with jack and jack stands. We have ours on a lift. The downstream oxygen sensors are the ones that go right into the catalytic converter. Passenger side is here and driver's side is over here. We're going to show you how to replace the passenger side one.
Follow your oxygen sensor connection up to this blue connector here. There's a tab right here. Press with your thumb and pull to disconnect. To remove your bad O2 sensor, just use a pair of pliers or a pair of wire cutters and cut the wires.
Many times these are in there kind of tough, so I like to use a hammer just to give it some impact. A few hits will loosen it up. Use some rust penetrant and let it sit.
And then I've got it out a little bit and then put rust oil on there, rust penetrant, and now I'm actually going to thread it back in and see if I can work some down in. The old sensor is out. Here are the old sensor from the vehicle and the new one from 1A Auto. Remove the shipping protector before installation. The connections are exactly the same. The oxygen sensors are exactly the same. The one from 1A Auto is going to be a very good replacement. It's going to fit and function just like your original.
New oxygen sensors are available at 1AAuto. Thread in the oxygen sensor. And then just make sure your lead goes up and the tab is down to go into the connector and plug it in and make sure it clicks.
Thanks for watching. Orders ship same day when ordered by 2pm ET.Are you struggling to find out which O2 sensor you should replace? I often hear about people who replaced the wrong sensors because they did not have the knowledge of which sensor they replaced. Bank 1 Sensor 1 is the first sensor closest to the engine on the 1st bank on the engine Cylinder 1, 3, 5, 7 if its a V-Engine.
Usually the left side of the engine from a driver perspective. Bank 1 Sensor 2 is the second sensor on the exhaust pipe from the engine, usually behind the catalytic converter. Bank 2 Sensor 1 is the first sensor closest to the engine on the 2nd bank on the engine Cylinder 2, 4, 6, 8 if its a V-Engine Usually the right side of the engine from a driver perspective.
How to Tell If the O2 Sensor Is Bad in a Ford Explorer
Bank 2 Sensor 2 is the second sensor on the exhaust pipe from the engine, usually behind the catalytic converter. Usually the right side of the engine from a driver perspective. If you have a V-engine, you have one bank on each side of the engine. But I have an inline 6 that is telling me bank 2? You may ask. You can have bank 2 on both inline engines and transverse engines engines mounted in the other direction.
If you know which cylinder is number 1, it makes no difference if you have an inline or transverse engine. The sensor number is telling us where on the exhaust system the O2 sensor or Exhaust temperature sensor is mounted. The 1st sensor is located closest to the engine and the last is located at the rear of the exhaust system. Some diesel engines have a lot of exhaust temperature sensors and they can use sensor 1 — 2 — 3 — 4 etc.
You can find the cylinder number in various different ways. On some vehicles, you can find the cylinder number stamped on the crankcase cover.
You can also call your authorized dealer and ask them if they have any information about it. If you are not sure, you can ask us a question for free at our homepage. If you have an OBD2 scanner at home, you can make this process a lot easier.
If you do not have one and want to buy one, you can check out our review of Best OBD2 scanners. When you have access to a scanner, you can do this to find out which side is bank 1 and which is bank 2.
The P code can be triggered by a faulty O2 sensor. My recommendation is to troubleshoot the O2 sensor first as it may fix the P code. If you want more help on how to diagnose the P code, you can check out our P Troubleshooting article. If you still have any questions about this, comment below and I will help you. If you have any other car questions, you are welcome to ask them for free at our homepage. I hope you enjoyed this article and would appreciate it if you also checked out our other articles.
Hello I'm Magnus, the owner and the writer of this website.Oxygen sensors have been installed into the exhaust systems of vehicles for quite a few years. Depending on the year of your Ford Explorer, you may very well have multiple oxygen sensors. The easy part is telling if one is bad; the hard part is telling which one is bad.
These sensors monitor the amount of oxygen to the ratio of fuel burned through the exhaust system,l and if they detect a variation above or below a certain range, the sensor sends out a signal to the computer of the Explorer, which then triggers the MIL Malfunction Indicator Lamp to be illuminated on the dashboard while the vehicle is operating. Locate the DLC diagnostic link connector under the driver's-side dashboard.
It will have a trapezoidal shape and resemble the outlet of the code reader plug. Plug the hand-held portable code reader into the DLC once you've located it. This will apply power to the code reader and allow all of the power options of the Explorer to perform without the vehicle actually running. Locate the buttons and options on the code reader.
Many hand-held code readers will have two or three buttons. One will be an "Enter" button and the other one or two will be scroll buttons that will manipulate the cursor to the onscreen menu of the code reader. Use the scroll button to move up or down to the "Codes detected" or "Read codes" option on the onscreen menu of the code reader. Press the "Enter" button. Write down the number and the brief description the code reader dictates on the onscreen menu.
While this is merely one example of many different DTCs diagnostic trouble codes that could trigger an MIL light to illuminate, it does indicate a problem with the oxygen sensor and which one has the problem.
Locate the bad oxygen sensor by referring to the manual to learn where the first cylinder or "Cylinder One" is located on the motor. Different-sized motors in the Explorers offer a variety of options. The position of the first cylinder dictates which bank the oxygen sensors run and scan.
It may be the right side or it may be the left side. Some Explorers may have up to four oxygen sensors, and determining the bank is crucial to locate and condemn the problem sensor. The lower the number in the bank position for example, bank one the closer to the motor the sensor would be.
The higher the number in the bank position bank twothe farther down the exhaust system and away from the motor it will be. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Works, contact us.
Step 1 Locate the DLC diagnostic link connector under the driver's-side dashboard. Step 3 Locate the buttons and options on the code reader. Step 4 Write down the number and the brief description the code reader dictates on the onscreen menu.
Items you will need Code reader Owner's manual. About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.Oxygen sensors, also known as the O2 sensors, are one of the most replaced sensors in a vehicle, as they have a short life span. But even then, you cannot risk, not replacing them in time, as they are an important component when it comes to the working of the vehicle.
If one of these O2 sensors has stopped working, you need first to find which one it is, locate it and then get it replaced or fixed. In this article, we will be discussing two different methods that are mostly used to locate O2 sensors. O2 sensors are first divided into two categories; bank 1 and bank 2. Due to this, a lot of people have trouble locating which O2 sensor is bank 1 and which O2 sensor is bank 2 and in confusion, they sometimes even end up replacing the wrong sensors which cost them both money and time.
We will be clarifying each one in detail so that you have no trouble using either of the two methods to locate the right sensors successfully. We will explain in detail bank 1 and bank 2 sensors and also sensor 1 and sensor 2 so that from next time onward you are able to locate and then replace the right sensors.
The cylinders in the engine are mostly divided into two parts. If the engine in your car is V-engine, then it will have one bank on each of the two sides of the engine. 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 instance, Cylinders 2 — 4 — 6 — 8. There are two types of Engines, inline engines and transverse engines engines that are mounted in other directions. Now the next problem that arises is how to be able to tell the number of a cylinder.
In order to be able to do that, this is what you got to know first. Some of these different ways are mentioned below:. The number will be stamped on the crankcase. In some cases, they got the numbers written on them. So they might not be in the right positions.
The dealer might have some information about that as well. The sensor number is supposed to tell us where the O2 sensor or the Exhaust temperature sensor is located or mounted on the exhaust system. The 1st sensor is always located the closest to the engine, and the second is always located at the rear end of the exhaust system.
In the case of more than 2 sensors, such as in diesel engines as they need a lot of exhaust temperature sensors, there might be sensor etc. In such a case, sensor 1 is located nearest to the engine, and the last sensor is located at the rear end of the exhaust system. You can also find the right sensor using an OBD2 scanner. This can cause problems like low emissions and bad fuel economy, as mentioned above. It might even result in the failing of the catalytic converter.
Keep in mind that the new replacement O2 sensors must also be of the same type as the original ones installed in the vehicle with the same number of wires. Otherwise, that too will cause you problems. If even one of the O2 sensors, on your high-mileage vehicle, has come to the end of its span, the chances are that the other sensors might also be nearing the end of their lives and should be replaced as well at the same time in order to restore the performance.
Therefore, as you can see, it is highly important to get these sensors replaced before they become a big problem.