What Is P1247 code on 7.3 powerstroke: How To Fix?

Ford 7.3L engine tells users about engine difficulties through diagnostic trouble codes or DTCs. The P1247 code is one of them & it’s a relatively tricky code to solve.

If you’re getting the error code P1247 & don’t know what it means, this article is for you. From symptoms to solving methods, I’ve discussed everything in this article. 

P1247 Code On 7.3 Powerstroke

What Does P1247 Code Means On 7.3L Powerstroke? 

P1247 is one of the error codes of Ford 7.3L Powerstroke. By definition, the DTC P1247 means Turbo Boost Pressure Low.

Turbocharger helps your engine to achieve more power than its ordinary limit. This whole process of boosting engine performance depends on how much pressure (airflow) the turbocharger can produce for the engine. 

Ford 7.3L uses MAP (Manifold Absolute Pressure) sensor to monitor the airflow of the engine. When the MAP sensor notices low pressure, it tells the powertrain control module to generate a P1247 code. 

Symptoms Of Getting The P1247 Code On A 7.3

Like every other diagnostic trouble code, P1247 code also comes with a few visible symptoms. These symptoms mentioned below are so severe that you can’t unsee them: 

  • CEL (Check Engine Light) is Active
  • Shaky & Rough Driving Experience 
  • Losing Power On a Daily Basis 

In summary, you won’t feel good about your truck anymore if you fall victim to this error code. 

The Causing Factors Of The Error Code P1247

There are several factors that can lead your truck to the error code P1247. Here are some of the causing factors of the DTC P1247:

  1. Damaged Manifold Absolute Pressure Sensor Hose
  2. Crossover Tube or Air Intake Manifold Hose Leaks
  3. Faulty Manifold Absolute Pressure Sensor 
  4. Low Turbo Boost Pressure 
  5. Faulty PCM (Powertrain Control Module) 

Among those five causes, the 5th one can happen only in rare cases. Even if you’re getting this code for damaged wiring, don’t take this code too lightly. 

How Seriousness Is Code P1247 On 7.3L Powerstroke? 

Though this code won’t break your engine instantly, doesn’t mean you should ignore this code. You’ll likely have this code again after 20-30miles if you clear this code without solving properly.

Don’t ruin your long-trips carrying this code along, because it will hurt your driving experience for sure. That’s why follow the next segment to know the proper troubleshooting methods of solving this error code.

How to Solve P1247 Error Code On 7.3L Powerstroke?

You’ll mostly check & replace a few components of your engine. However, make sure to have proper equipment before proceeding to the solve part.  

Assuming you’ve your equipment ready, let’s get started with the well-known troubleshooting methods for the DTC 1247. 

Check Manifold Absolute Pressure Sensor Hose 

Have a look over the MAP sensor hose. If you’re noticing any damage or cracks, chances are – they are causing the error code to appear. 

You’ll find MAP sensor hoses for a cheaper rate, around $20. Replace the faulty or damaged hoses & check if the code appears again after a few miles of driving. 

Check Manifold Absolute Pressure Sensor

Just after checking the MAP Sensor hose, it’s time to check the MAP sensor itself. The MAP sensor calculates airflow & sends information to the PCM. 

It’s possible that your MAP sensor might be faulty & sending wrong information to the PCM. The MAP sensor costs around $130, but you may need professional help to replace it. 

Check Air Intake Manifolds

It’s a good idea to check the air intake manifolds as the MAP sensor is located there. After reaching the intake manifolds, check for leaks, restriction and misrouting.

Beware of any types of contamination with the air intake manifolds. Make sure to replace them quickly if you find any inconvenience while inspecting. 

Check Powertrain Control Module 

If the methods mentioned above failed to solve the error code, suspect the PCM. A faulty PCM can bring up any error codes & the P1247 is one of them.

You’ll need expert help for sure if you’re replacing your PCM. However, it’s always a better decision to let the expert technician inspect your engine before drawing any decision. 

How Much Does It Cost To Solve The Error Code P1247

Depending on your replacement parts, it may cost $20-$500 or above to solve the error code P1247. 

Let me breakdown the costs for you so that you can calculate easily: 

  • Replacement Of MAP Sensor Hoses Costs $20
  • Replacement Of MAP Sensor Costs $130 & above
  • Replacement Of Air Intake Manifolds Costs $80 & above 
  • Replacement Of PCM Costs $500 & above 

Keep in mind that you’ll have to spend extra $75 to $150 per hour if you’re doing the replacement from any auto shop. 

Common Mistakes While Solving The P1247 Code

You’ll probably make several mistakes while solving the error code. Still, try to avoid these common mistakes mentioned below:

  • Not Reading Technical Bulletin Of The Specific Model Thoroughly
  • Not Checking Other Possible Causing Factors Before Inspecting PCM

You’ll be ahead of other folks if you keep these common mistakes in mind while doing the fixing job. 

Additional Comments To Consider Regarding The P1247 Code 

The DTC P1247 is a very tricky code to solve for the general users. Why? Because it requires checking several wirings & hoses related to the manifold absolute pressure sensor. 

Don’t hesitate to take expert opinions if you don’t want to pay the high bucks of an auto shop (initially). Later on, if they suggest anything expensive – do that for the sake of your truck. 


I hope this article was helpful enough to know the trouble code P1247 properly. Now you know the symptoms, possible causes & solution of this error code. 

The manual book alone can save you from various unexpected experiences. Make sure to follow your 7.3L’s manual book before conducting any repairing operation.

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