The P1247 code in a 7.3 Powerstroke engine indicates a problem with turbo boost pressure, specifically that it is too low. This code is significant for truck owners who want to maintain optimal performance and prevent further engine issues. Understanding this code helps diagnose and fix potential problems effectively.

What Does P1247 Code Mean on 7.3L Powerstroke?

When the Powertrain Control Module (PCM) detects low pressure from the Manifold Absolute Pressure (MAP) sensor, it triggers the P1247 code, which stands for “Turbo Boost Pressure Low.” This situation often arises when the turbocharger cannot produce adequate airflow, impacting engine performance and efficiency.

Symptoms of P1247 Code in 7.3 Powerstroke

Common symptoms associated with the P1247 code include:

  • Check Engine Light (CEL) activation
  • Rough or shaky driving experience
  • Loss of power during acceleration
  • Poor fuel economy

These symptoms can significantly affect driving comfort and vehicle reliability.

Causes of P1247 Code

Several factors can lead to the P1247 error code, including:

  • Damaged MAP sensor hose
  • Leaks in the crossover tube or air intake manifold hose
  • Faulty MAP sensor
  • Low turbo boost pressure
  • Defective PCM

Diagnosing these issues accurately is crucial to resolving the error code.

How to Diagnose and Fix P1247 Code

To address the P1247 code effectively, follow these troubleshooting steps:

Check MAP Sensor Hose

Inspect the MAP sensor hose for any signs of damage or cracks. Replacing a damaged hose is relatively inexpensive and can resolve the issue.

Examine the MAP Sensor

Check if the MAP sensor is functioning correctly. A faulty sensor can send incorrect data to the PCM, leading to low boost readings. Replacement costs around $130.

Inspect Air Intake Manifolds

Look for leaks or blockages in the air intake manifolds where the MAP sensor is located. Any contamination should prompt immediate replacement.

Evaluate Turbocharger Functionality

Ensure that the turbocharger is operating correctly. If it’s slow to respond or has stuck vanes, it may need servicing or replacement.

Check Powertrain Control Module (PCM)

If previous steps do not resolve the issue, consider inspecting the PCM for faults. A malfunctioning PCM can generate various error codes, including P1247.

Cost Estimates for Repairs

Repair costs for resolving the P1247 code can vary widely based on what needs to be replaced:

  • MAP Sensor Hose Replacement: $20
  • MAP Sensor Replacement: $130+
  • Air Intake Manifold Replacement: $80+
  • PCM Replacement: $500+

Labor costs will typically add an additional $75-$150 per hour at auto shops.

Importance of Addressing P1247 Code

Ignoring the P1247 code can lead to more severe engine problems over time, including decreased performance and potential engine damage. It’s essential to troubleshoot and fix underlying issues promptly to ensure your vehicle operates smoothly.

FAQs About P1247 Code

  • What should I do if my truck runs fine but shows a P1247 code?
    Even if your truck seems to run well, it’s essential to investigate why the code appears. Low boost pressure can lead to long-term engine issues.
  • Can I drive my truck with a P1247 code?
    While it may be possible to drive with this code present, it’s not advisable as it could worsen existing problems.
  • How can I prevent future occurrences of P1247?
    Regular maintenance of your turbo system and ensuring all sensors are functioning correctly can help prevent this issue.