Bank 2 sensor 2 ford explorer

Ford Explorer P0156: O2 Sensor Circuit Malfunction (Bank 2 – Sensor 2)

P0156 is an OBDII trouble code that occurs in the Ford Explorer. It is typically caused when the O2 Sensor voltage is not within its specified operating range.

• Bank two will be the side of the engine with cylinder 2 in the firing order.
• Sensor 2 is aft of the catalytic converter.

Ford Explorer P0156 Symptoms

Often, the only symptom of P0156 is going to be the service engine soon light. In some cases, there can be other symptoms as well. These symptoms include:

Most of the time, it’s not a breakdown risk. 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.

Driving your vehicle for really long periods of time with P0156 can potentially lead to engine or catalytic converter damage.

P0156 Causes: Ford Explorer

Here are the most common issues that cause the P0156 code in the Explorer. They are presented in order (somewhat) of most to least likely to cause the problem.

• Bad Oxygen Sensor– The oxygen sensor itself is one of the most likely reasons that P0156 is triggering your service engine soon light. Although it is a temptation to replace it right away, it wouldn’t hurt to check out the wiring harness around it beforehand. See directly below. They are relatively affordable at Autozone or Amazon.
• Wiring Harness Damage– 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. The downstream sensor is especially susceptible to this problem Here’s how to find a short in the wiring harness (Youtube)
• Damage to the Terminal– The terminal that the oxygen sensor connects to (the plug) is also relatively susceptible to damage. You’ll want to make sure that there is voltage going to it. There’s more on that directly below.
• Exhaust Leak– If the exhaust is leaking, then it’ll allow oxygen in that shouldn’t be there. That can throw this code.
• Wrong O2 Sensor– If you are getting P0156 after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad.

Explorer P0156 Diagnosis

Here is a fantastic video that covers all aspects of diagnosing a P0156 trouble code It’s for a VW, but the code is universal.

It is possible to diagnose the P0156 with a multimeter. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec, this can help you determine if it’s your Explorer’s O2 sensor, or wiring harness that’s the issue.

If you don’t have access to a multimeter, it certainly wouldn’t hurt to check the wiring to between the fuse box and the Oxygen sensor first. If it ends up being a wiring issue, it’ll save you money over buying an unnecessary O2 sensor.

You can also use a voltage test light to determine whether or not the oxygen sensor is getting any voltage at all (they’re about $5 at Walmart).

If it’s not getting any voltage, attach the test light to the harness plug and shake the wiring a little bit. If the light comes on, even for a second, you know that you have a short circuit causing the P0156 trouble code.

Conclusion

Most of the time with P0156, it’s going to be the oxygen sensor itself that has caused the code to trigger. Good luck finding whatever caused it in your Ford Explorer. If you have anything that you would like to add, please feel free to leave a comment below.

RECALLS! January 2022 Jason, “MAZDA6 shuts down while driving” fuel pump not monitored, may be no engine light etc. SEE…

I have a 2007 h3 hummer base model. Had transmission rebuilt (Pro).My problem is that when it gets around 35…

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Ford Explorer P0161: Heated O2 Sensor – Performance | Bank 2 Sensor 2

P0161 is a very common OBDII code that occurs in the Ford Explorer. It is typically caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 2 sensor 2. Replacing the Oxygen sensor will fix the problem a majority of the time. Some of the other causes of P0161 are listed below.

The purpose of the heated element in the oxygen sensor is to quickly bring it up to normal operating temperature after your Explorer has been started. When it goes bad, it is more difficult for the engine to get the air fuel mixture right.

Ford Explorer P0161 Symptoms

Typically, the only symptom of P0161 is going to be the service engine soon light. It should not be considered a breakdown risk. 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.

P0161 Causes: Ford Explorer

Here are the most common issues that cause the P0161 code in the Ford Explorer. They are presented in order (somewhat) of most to least likely to cause the problem.

• Bad Oxygen Sensor– The oxygen sensor itself is one of the most likely reasons that P0161 is triggering your service engine soon light. Although it is a temptation to replace it right away, it wouldn’t hurt to check out the wiring harness around it beforehand. See directly below. They are relatively affordable at Autozone or Amazon.
• Wiring Harness Damage– 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. The downstream sensor is especially susceptible to this problem Here’s how to find a short in the wiring harness (Youtube)
• Damage to the Terminal– The terminal that the oxygen sensor connects to (the plug) is also relatively susceptible to damage. You’ll want to make sure that there is voltage going to it. There’s more on that directly below.
• Blown Heater Sensor Circuit Fuse– Here’s how to test if a fuse is blown (Youtube).
• Wrong O2 Sensor– If you are getting P0161 after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad.

Explorer P0161 Diagnosis

Here is a fantastic video that covers all aspects of diagnosing a P0161 trouble code.

It is possible to diagnose the P0161 with a multimeter. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec, this can help you determine if it’s your Explorer’s O2 sensor, or wiring harness that’s the issue.

If you don’t have access to a multimeter, it certainly wouldn’t hurt to check the wiring to between the fuse box and the Oxygen sensor first. If it ends up being a wiring issue, it’ll save you money over buying an unnecessary O2 sensor.

You can also use a voltage test light to determine whether or not the oxygen sensor is getting any voltage at all (they’re about $5 at Walmart). If it’s not getting any voltage, attache the test light to the harness plug and shake the wiring a little bit. If the light comes on, even for a second, you know that you have a short circuit causing the P0161 trouble code.

Conclusion

Most of the time with P0161, it’s going to be the oxygen sensor itself that has caused the code to trigger. Good luck finding whatever caused it in your Ford Explorer. If you have anything that you would like to add, please feel free to leave a comment below.

RECALLS! January 2022 Jason, “MAZDA6 shuts down while driving” fuel pump not monitored, may be no engine light etc. SEE…

I have a 2007 h3 hummer base model. Had transmission rebuilt (Pro).My problem is that when it gets around 35…

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Ford Explorer P0157: Oxygen Sensor Low Voltage (Bank 2 -Sensor 2)

P0157 is a common OBDII code that occurs in the Ford Explorer, it’s a general code (this means that it has the same meaning for any vehicle).

This code typically indicates that there is an issue with the wiring or harness going to the sensor, or the sensor itself is bad. There are other things that cause P0157 to populate. We’ll cover those below.

• Bank 2 refers to the side of the engine with Cylinder 2 in the firing order.
• Sensor 2 is downstream of the catalytic converter.

Ford Explorer P0157 Symptoms

Typically, the only symptom of P0157 is going to be the service engine soon light. Sensor 2 is mostly about checking to see that the exhaust has been scrubbed by the catalytic converter. The exception to this is Dodge Vehicles.

Most of the time, it’s not a breakdown risk. 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.

P0157 Causes: Ford Explorer

Here are the most common issues that cause the P0157 code in the Ford Explorer. They are presented in order (somewhat) of most to least likely to cause the problem.

• Bad Oxygen Sensor– The O2 sensor itself is one of the most likely reasons that P0157 is triggering your service engine soon light. Although it is a temptation to replace it right away, it wouldn’t hurt to check out the wiring harness around it beforehand. 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 susceptible to damage. 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. Sensor 2 is right by the Catalytic Converter, which produces a ton of heat. The downstream sensor is especially susceptible to this problem Here’s how to find a short in the wiring harness (Youtube).
• Plugged Catalytic Converter– That catalytic converter can cause the P0157 code to set. If it’s plugged enough, it’ll feel like the engine runs out of power under enough load. This is because the converter can only let a fraction of the amount of exhaust through that it normally can. If it’s not too clogged, you may not yet feel any symptoms, but the code could be a sign of trouble. How to tell if your catalytic converter is bad (2carpos YouTube).
• Damage to the Terminal– The terminal that the oxygen sensor connects to (the plug) is also relatively susceptible to damage. You’ll want to make sure that there is voltage going to it. There’s more on that directly below.
• Wrong O2 Sensor– If you are getting P0157 after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad.

Explorer P0157 Diagnosis

Here is a fantastic video that covers all aspects of diagnosing the P0157 code:

It is possible to diagnose the P0157 with a multimeter. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec, this can help you determine if it’s your Explorer’s O2 sensor, or wiring harness that’s the issue.

If you don’t have access to a multimeter, it certainly wouldn’t hurt to check the wiring to between the fuse box and the Oxygen sensor first. If it ends up being a wiring issue, it’ll save you money over buying an unnecessary O2 sensor.

You can also use a voltage test light to determine whether or not the oxygen sensor is getting any voltage at all (they’re about $5 at Walmart). If it’s not getting any voltage, attach the test light to the harness plug and shake the wiring a little bit. If the light comes on, even for a second, you know that you have a short circuit causing the P0157 trouble code.

Conclusion

Good luck finding whatever caused P0157 in your Ford Explorer. If you have anything that you would like to add, please feel free to leave a comment below.

RECALLS! January 2022 Jason, “MAZDA6 shuts down while driving” fuel pump not monitored, may be no engine light etc. SEE…

I have a 2007 h3 hummer base model. Had transmission rebuilt (Pro).My problem is that when it gets around 35…

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