How to Fix the P1247 Code on a 6.7L Powerstroke (Pro Tips)

Ford 6.7 Powerstroke engine informs the user about certain engine problems and difficulties through some codes. The p1247 is one of those many diagnostic trouble codes and a tricky one to deal with. So, what does the error code p1247 on the 6.7 Powerstroke mean?

The P1247 code on 6.7 powerstroke means a low turbo boost pressure in the engine. Powerstroke 6.7 uses a MAP sensor, aka Manifold absolute pressure sensor, to monitor the engine’s airflow. The MAP sensor changes the accelerator Pedal Position (APP). Malfunction in any of these will cause the p1247 code.

If you are getting this code and don’t know how to deal with this, this article is exactly for you.

How to Fix the P1247 Code on a 6.7L Powerstroke

What Does The P1247 Code Mean On 6.7 Powerstroke?

If we go through a definition, the DTC p1247 indicates the turbo boost pressure is low in your 6.7 Powerstroke ford engine. As we already know, the engine has a pre-installed MAP sensor, which is used to observe the low pressure of the engine. 

When the sensor notices there is a low pressure, it will send a signal to the powertrain control module to show a p1247 code.

So, let’s breakdown the p1247 code to your more deeply so you can understand what the code actually means

  • P = Powertrain, the system of components that propel the vehicle forward
  • 1 = It indicates to a generic manufacturing code
  • 2 = It means the system related to injection nozzles.
  • 47= Specific Fault Index [In our case it indicates a turbo boost pressure is low]

So, what does this exactly mean? Well, it can be interpreted in many ways, and the basic definition is center High mounted Stop Lamp Circuit.

How Serious Is Code P1247 On 6.7 Powerstroke?

This code is pretty much serious for your 6.7 Powerstroke engine, and you might need to break some sweat to fix it. 

Although it won’t damage your engine instantly, that doesn’t change the fact that this code is dangerous for your engine.

You will get this code very often if you don’t fix the issue properly. Some of the users stated that they are getting the code every 20-30 miles, so it is necessary to clear this code. 

If you carry the code along, it will ruin your driving experience, and your long trips will be affected.

What Causes Code P1247 On The 6.7 Powerstroke?

You must be wondering what must be the causing factors behind the p1247 code on the 6.7 Powerstroke engine. Well, there are many to be precise. You need to check for the specific reason in order to troubleshoot the issue, so, let’s take a look at them-

  • Damaged MAP (Manifold absolute pressure) sensor
  • Air Intake manifold or crossover tube hose leak
  • Defective PCM (powertrain control module)
  • Malfunctioning MAP (Manifold absolute pressure) Hose
  • Low turbo boost pressure

Other Symptoms Of Getting P1247 On 6.7 Powerstroke?

You wouldn’t love your car that much if you started having this code on it. Your vehicle will show symptoms if you have the p1247 diagnostic trouble code. 

If you experience these symptoms, you must take care of them as soon as possible. So, let’s take a look at the possible symptoms you need to deal with-

  • Bad driving experience
  • Losing power daily
  • Battery losing its power
  • Active CEL (Check Engine Light) 

How To Fix The P1247 Code On 6.7 Powerstroke?

Even though you might face some critical problems with the p1247 code on the 6.7 Powerstroke engine, you can fix them on your own. So, let’s show you how you can easily troubleshoot it-

1. Replace the MAP sensor

The MAP sensor is an integral part of the engine as the engine control unit uses the pressure data to measure the airflow into the engine. Excessive use of fuel and power leakage can defect your manifold absolute pressure (MAP) sensor. Follow the steps below to replace the MAP sensor-

Step 1: Disconnect the vacuum line

Locate the sensor and find the malfunctioning sensor. If you are well-known with the parts, it will be easy for you. Use pliers to lose the retaining clamp. In order to disconnect the vacuum line from the MAP sensor, detach any clamps that are holding the vacuum line in place

Step 2: Remove the bolts

Remove the bolts holding the MAP sensor, and use a socket wrench to remove the fasteners also.

Step 3: Remove the sensor

Now, unplug the sensor’s electrical connector by pressing down the tab and pushing the connectors apart. Next, you can now remove the sensor. After that, install the new sensor by replacing the new one.

2. Cleaning the leaks in air intake manifolds

Once you reach the MAP sensor, look at the air intake manifolds as well; both are located at the same place. Intake manifolds might have leaks or restrictions or misrouting. The air suction of the intake manifold might get compromised, but this issue is quite common here.

If somehow there are any leaks like oil in the intake manifold, it is an underlying issue. A worn-out PCV valve or a clogged oil passage can be the reasons for this.

Getting oil out of the intake manifold

We think the best way will be to remove the intake manifold and clean it regularly using a degreaser choice. It might take some time, but that’s the best way we can think of. You can also try a decent carb or fuel injection cleaner for this.

3. Replacing the PCM (Powertrain Control Module)

A failed PCM module can be another reason for this. If the PCM module is malfunctioning, it will bring many diagnostic error codes like p1247. 

The PCM module controls every aspect of your vehicles, such as power windows, wipes, air conditioner, and many more. 

So, a failed PCM will affect every system in your car. Let’s take a look at how you can replace the PCM module-

Step 1: Disconnect the battery

First, you need to disconnect the battery in order to prevent any unwanted incident.

Step 2: Locate the PCM

The next thing you need to do is locate the PCM module.

Step 3: Find the PCM number

Look up the PCM number. Check the PCM module number based on the car model, engine, and components.

Step 4: Examine the new module

After purchasing the new module, don’t install it right away. Compare it with the previous one; the mounting location and the connectors will match. Do a flash update before installing it.

Next, take out the old module gently and install the new one. Once you are done, reconnect the battery.

4. Low turbo boost pressure

Low turbo boost pressure can occur due to many reasons, such as fuel starvation or air leaks. Moreover, a restricted exhaust resulting from having the turbo turbine connected can also lead to low turbo boost pressure. So, how to troubleshoot this issue? Let’s see then-

Strategy 1: checking the fuel filter

Start by checking the fuel filter; if it is blocked or restricted, it can cause harm to the engine leading to fuel starvation.

Strategy 2: examine the fuel pressure

From this part, most of the time the issue occurs. Many times, just a replacement of the fuel filter will sort out the problem. Fuel filters are relatively cheap compared to other components that require replacing.

Can You Drive Your 6.7 Powerstroke With Code P1247?

Yes, you can drive with the p1247 code on your 6.7 powerstroke engine. You won’t be having that much of a problem at the beginning. But your vehicle will often bring up the code, which will disturb your driving experience. 

Apart from this, if you keep driving with the error code p1247 and don’t solve the code, it will damage your 6.7 powerstroke engine gradually. Driving with this code will give you a bad driving experience.

We heard from many people that they experience engine failure or power cuts while driving if the p1247 code is active.


Now, that you have gone through the main article, it’s time to answer some questions regarding the p1247 code of 6.7 powerstroke low turbo boost pressure-

What are the other DTC codes related to low turbo boost pressure?

P2262 is the diagnostic error code related to Turbo boost pressure- mechanical. This is an OBD-II generic code. 

A bad turbocharger or turbocharger electronic actuator can cause this error code to occur. It happens when the ECM monitors detect an issue with the turbo control.

How to spot low turbo boost pressure?

You can follow a few methods in this case, such as observing the vacuum gauge or boost indicator light. You can also take a look at the function of the wastegate. If there is any wobbling shaft, inspect the turbocharger yourself.

What is the idle turbo boost pressure?

It mainly depends on the load. Generally, 5-10 PSI is normal, and although the Powertrain control module adjusts the turbo boost pressure. The more you haul on your engine, the more boost you will get.


So, whenever you experience any problem with the p1247 error code, try to solve it as soon as possible. Once you see the signs and symptoms, follow our tips and methods to troubleshoot the code. 

But, if you are not confident enough to do the job, leave it for the professionals. We hope this article was helpful enough for you to know about the error code p1247 of 6.7 powerstroke and how to fix these issues.

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