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P2106

Forced Limited Power

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By
KBB Service Advisor
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Reviewed by
Gary Hardesty

What Is the P2106 Code?

Symptoms
Causes
Seriousness
Can I Still Drive?
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Difficulty of Inspecting
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The P2106 code indicates that the PCM (powertrain control module) has forced the vehicle to go into a reduced-power mode, also commonly known as a “Limp Mode,” “Home Mode,” or “Limp Home Mode.” The precise components of a Limp Mode vary depending on the model but will generally include a reduction in the function of the vehicle, ensuring that the vehicle doesn’t have to work harder than is necessary, reducing the likelihood of long-term damage.

More About the P2106 Code

One of the most important elements to consider is that the P2106 code almost never appears by itself. This code is not a primary indicator of a problem but instead shows that the PCM has decided to lock down the vehicle’s function to avoid long-term damage. Another code will show up first, indicating that there’s a problem with your vehicle function, and will trigger this code to send the car into Limp Mode.

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What Are the Symptoms of a P2106 Code?

Symptoms of the P2106 code can vary dramatically depending on your vehicle’s make and model, as well as the precise code that triggered the P2106 code. It may be as severe as being completely unable to start the vehicle, while in some vehicles, it may allow you to drive but reduce your throttle operation or lock your transmission into first gear. If your vehicle is generally malfunctioning and you see the check engine light, then you might be experiencing a P2106 code.

What Are Some Causes of a P2106 Code?

Different manufacturers will throw this code for different reasons. The most basic explanation of the code is that it comes up when the vehicle might see damage if you continue to run it. Limp Mode is intended to push you to go to an expert as soon as possible so your vehicle doesn’t continue to sustain damage over time due to issues in another part of the vehicle. Any issue that may cause long-term damage can result in a P2106 code.

How Serious Is the P2106 Code?

The P2106 code is extremely serious. This code means that there’s a problem within your vehicle that your PCM has established that might cause problems if you continue to run the vehicle for extended periods of time. You should never just ignore the P2106 code; not only can it make your vehicle very frustrating to run in general, but also it’s a sign that there’s a serious problem within the vehicle.

Can I Still Drive with a P2106 Code?

Sometimes, the P2106 code will make it so that your vehicle can’t drive at all; your vehicle may not even be able to start. However, even if the vehicle can technically start, it’s best to avoid running it for extended periods of time. Remember, this code means that there’s some other kind of potentially harmful problem within your vehicle. It’s best to get it to an expert as soon as possible and fix the underlying problem rather than continuing to drive your vehicle.

How Easy Is It to Diagnose a P2106 Code?

The diagnostic process of the P2106 code requires you to determine what’s triggering this problem. Not only do you have to be able to determine what other OBD codes the vehicle is throwing, but also you’ll need to be able to figure out the underlying cause of those codes. This is more difficult than you might expect, especially if your vehicle is throwing multiple codes, and it is best left to a professional.

How Difficult Is It to Inspect a P2106 Code?

The inspection process of a P2106 code will often involve all components of the vehicle. You may need to inspect all components of the engine, many connections with the battery, and inspect the codes within the ECM (engine control module) or PCM. There is no one singular inspection experience for the P2106 code, which is one of the reasons it’s best to leave this process up to the experts.

Need Additional Help with Your P2106 Code?

If you’re experiencing the P2106 code and you need help fixing it, then you’re not alone. This is a common code to take to a local mechanic shop rather than trying to fix it yourself, and even many experienced DIYers prefer to get help from an expert with this one. The good news, however, is that local repair shops are experienced with this process and can help you fix it.

The first step is to find a repair shop in your area, which you can do with the KBB service center locator. This locator can help you find a repair shop that’s as close as possible, which will reduce the amount of time that you drive while your vehicle is running this code or reduce the cost of a tow truck if your vehicle is completely unresponsive.

Additionally, if you’re looking for more insight into how your vehicle throws codes and you want to understand more about what those codes might mean, the OBD-II database at KBB can give you more insight into the OBD-II codes and what each of them means.

P2106 Q&A

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