P1249 Code 7.3 Powerstroke – Meaning, Causes & Symptoms

The Ford 7.3 Powerstroke is known for its durability and longevity. However, even the best engines have their issues. One of the most common problems with the 7.3 Powerstroke is turbo over-boosting and generating p1249 code 7.3 powerstroke.

When this happens, the PCM (Powertrain Control Module) detects that the boost has exceeded the allowable limit. And sets P1249 code on 7.3 Powerstroke as the DTC (Diagnostic Trouble Codes). The code means that PCM has detected that the boost was just too excessive. This can be caused by a variety of problems, such as a sticking wastegate actuator, a blocked air filter, or a faulty boost pressure sensor.

Are you confused about how to fix the p1249 code? Don’t worry; I will tell you everything you need to know. Stay tuned!

What Does P1249 Code 7.3 Powerstroke Mean on my car

What Does P1249 Code 7.3 Powerstroke Mean on my car?

In diesel engines, the turbocharger is responsible for supplying compressed air to the cylinders. When the turbocharger is working too hard, it can over-boost the engine, which can cause damage.

The p1249 code on 7.3 Powerstroke means that the PCM has sensed that the boost was too high. This code can be caused by several things, including a defective turbocharger, a faulty wastegate, or an issue with the fuel system.

Turbochargers are used in a variety of applications to increase the power output of an engine. A turbocharger is a device that uses exhaust gases to power a turbine, which in turn drives a compressor. The compressor increases the pressure of the air entering the engine, which results in a larger amount of fuel being burned and an increase in power.

But what happens when the turbocharger malfunctions and the wastegate won’t be exposed to decrease the boost? You end up with a turbo that is over-boosted, which can lead to engine damage.

Read also >> P1280 Code 7.3 Powerstroke + Detailed Fixing Guide

5 common Causing Factors Of The Error Code P1249 on 7.3 Powerstroke

The error number P1249 might show up for a variety of reasons, as I have stated. The following is a list of a few of the most typical P1249 causes:

#1-The Wastegate Control Solenoid, Actuator, or Valve

When your Ford 7.3 Powerstroke develops an error code P1249, it’s usually something to do with the wastegate control valve performance, actuator, or valve.

All of these components work together to regulate the air pressure in the turbocharger. And if any of them is damaged or malfunctioning, it can cause the code p1249.

If your truck is exhibiting symptoms such as poor performance, a lack of power, or black smoke from the exhaust, then it’s likely that one of these components needs attention.

The turbocharger faulty system can also cause p2263 code 6.4 powerstroke, I have written another blog about fixing the issue. You can take a peek!

#2- Fuel Injector with a Bad Electrical Assembly

When a vehicle displays the code p1249 on a 7.3 Powerstroke, it can happen when the electrical connection of the fuel injector is poor. Also, this can cause low fuel pressure and various running problems.

Yet, the Injector issue can also cause p1316 code 7.3 powerstroke. To fix the issue, take a look at my other blog.

3#- Plugged Up Wastegate Control Hose or Port

This code is indicative of a restricted exhaust flow and can be caused by various things, including a plugged-up faulty wastegate control hose or port. If this happens, it’s important to clean out the hose or port and clear the code so that the truck can run properly.

4#- Short or Open In the Fuel Injector Harness

If the fuel injector harness is shorted or open, it can cause the code p1249 on 7.3 Powerstroke. This code is stored when the PCM cannot determine the status of the fuel injectors. The most common reason for this code is short or open in the fuel injector harness.

And the most common cause of a shortened or open fuel injector harness is a faulty fuel injector. Other causes can include a faulty wiring harness, bad ground, or a bad ECU.

#5- Vacuum Leak or an Air Leak

The most common causes of this code are a vacuum leak or an air leak. If the engine has low compression, it can also cause this code. There are several things that you can do to troubleshoot this code.

You can start by checking the hoses and connectors for any signs of damage or leaks. You can also check the EGR valve for any signs of damage or leaks.

If you suspect that there is a vacuum leak, you can use a smoke machine to help find the leak. When you doubt that there is an air leak, you can use a stethoscope to help find the leak. Once you have found the source of the leak, you can repair it and then clear the code.

common Symptoms associated with Code P1249 On 7.3 Powerstroke?

If you are experiencing a

  • Rough and sluggish driving experience,
  • Coupled with the sound of metal-on-metal grinding

Your P1249 code likely is to blame. The plastic ring around the front (left & right) hubs can become loose over time and begin to scrape against the rotor. This can cause all sorts of problems, including

  • Decreased fuel economy
  • Rough driving
  • Even complete engine failure

If you’re experiencing any of these symptoms, be sure to take your truck in for service as soon as possible. A qualified mechanic will be able to diagnose trouble codes and fix them in no time.

How to Fix Code P1249 on 7.3 Powerstroke? 4 quick step to follow

If you are experiencing the P1249 error code on your 7.3 Powerstroke, don’t worry! There are a few things you can do to try and fix the issue.

1. The first step is to check the fuel pressure

If it is below spec, you will need to adjust it. You can do this by either manually adjusting the regulator or by using a scan tool.

2. Next step is to check for air leaks

You can do this by spraying soapy water around all of the fittings and seals on the intake manifold and engine. If there are any leaks, they will show up as bubbles. Once you have fixed any air leaks, re-test the system for proper operation.

3. Repair the Actuator Might Solve the Issue

If you’re experiencing error code P1249 on your 7.3 Powerstroke, the most likely cause is a vacuum leak on the wastegate regulator actuator.

One easy way to try the actuator if that can hold a vacuum is to install the Gauge Bar 014-00760 vacuum pump on it. If the pump doesn’t hold the vacuum, then you’ll need to substitute the actuator.

4. You can Replace Powertrain Control Module (PCM)

If you are experiencing the code p1249 on your 7.3 Powerstroke, there is a good chance that the Powertrain Control Module (PCM) is the root of the issue. The PCM can be easily replaced following these steps:

  1. Disconnect the red line of the negative battery terminal.
  2. Remove the passenger side kick panel and remove the two 10mm bolts securing the PCM to the firewall.
  3. Disconnect all of the wiring harnesses from the PCM and remove them from the vehicle.
  4. Install the new PCM, reconnect all of the wiring harnesses, and re-secure it in place with the two 10mm bolts.
  5. Reconnect the negative battery terminal and start up your truck!

frequently asked questions (FAQs)

How Serious Is The Code P1249?

The code p1249 is pretty serious, and it can cause engine damage. When you are experiencing this code, you need to fix the issue ASAP.

Which Is Better 6.0 or 7.3 Power Stroke?

The 7.3 L is the winner in terms of dependability, longevity, or convenience. The 6.0L is superior in terms of power, usability, and compliance with current emissions regulations. In the end, each engine has advantages and disadvantages.

Is a 7.3 Powerstroke a good engine?

The 7.3 Powerstroke is a fairly dependable engine when the emission controls are removed. The 7.3L Power Stroke could last for more than 250,000 miles despite the few usual issues.

7.3L Powerstroke – DTC P1280 >> Check out the video below:

Take Away

If you are experiencing the p1249 code 7.3 Powerstroke, there is a good chance that your turbo has been over-boosted. While this is not always indicative of a problem, it is best to have your vehicle checked out by a professional to be sure.

There are a few possible solutions to this problem, including getting a new turbo, upgrading the PCM, or repairing the air intake. I have explained everything in this blog. Thanks for reading!

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Mahir Ahmed


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