The P1247 code is a diagnostic trouble code (DTC) that signifies low turbo boost pressure in the Ford 7.3 Powerstroke engine. This issue can significantly impact vehicle performance, leading to symptoms such as loss of power, rough driving experiences, and increased fuel consumption. Understanding the causes, symptoms, and solutions for this code is crucial for maintaining the performance and longevity of your vehicle. This article aims to provide a detailed overview of the P1247 code, focusing on the most common problems associated with it and offering actionable solutions.
What is P1247?
The P1247 code indicates that the Powertrain Control Module (PCM) has detected low pressure from the Manifold Absolute Pressure (MAP) sensor, which is responsible for measuring air pressure in the intake manifold. When this sensor detects insufficient boost pressure from the turbocharger, it triggers the P1247 code. This situation can arise when the turbocharger fails to produce adequate airflow necessary for optimal engine performance.
Symptoms
Recognizing the symptoms associated with the P1247 code is essential for timely intervention. Common signs include:
- Check Engine Light (CEL): The most immediate indicator that something is wrong.
- Rough Driving Experience: The vehicle may feel shaky or unstable during operation.
- Loss of Power: Noticeable reduction in acceleration and overall engine performance.
- Increased Fuel Consumption: The engine may work harder than usual, leading to lower fuel efficiency.
Causes
Several factors can contribute to triggering the P1247 code. Understanding these causes can help in diagnosing and resolving the issue effectively:
- Damaged MAP Sensor Hose: Cracks or damage in the hose connecting to the MAP sensor can lead to inaccurate readings.
- Leaking Intake Manifold or Crossover Tube: Air leaks in these areas can prevent proper boost pressure from being achieved.
- Faulty MAP Sensor: If the sensor itself is malfunctioning, it may send incorrect data to the PCM.
- Low Turbo Boost Pressure: A failing turbocharger may not generate sufficient pressure.
- Faulty Powertrain Control Module (PCM): In rare cases, issues with the PCM itself can lead to erroneous codes being triggered.
Troubleshooting Steps
To effectively address a P1247 code, follow these troubleshooting steps:
1. Inspect MAP Sensor Hose
Check for any visible damage or cracks in the MAP sensor hose. If damaged, replace it with a new one to ensure accurate readings.
2. Examine Intake Manifold and Crossover Tube
Inspect these components for leaks or blockages. Any signs of wear or damage should be addressed immediately.
3. Test MAP Sensor Functionality
Using an OBD-II scanner, check if the MAP sensor is functioning correctly. If not, consider replacing it.
4. Assess Turbocharger Performance
Evaluate whether the turbocharger is producing adequate boost pressure. If it’s not functioning properly, repairs or replacement may be necessary.
5. Check PCM Health
If all other components are functioning correctly but the code persists, consider having a professional inspect the PCM for faults.
Cost of Repairs
The cost associated with resolving a P1247 code can vary widely based on what needs to be repaired or replaced:
- MAP Sensor Hose Replacement: Approximately $20.
- MAP Sensor Replacement: Typically around $130.
- Intake Manifold Repairs: Costs start at $80.
- Turbocharger Repairs/Replacement: This can range from $500 upwards depending on severity.
- Labor Costs: Auto shops generally charge between $75-$150 per hour for labor.
Overall, resolving a P1247 code could range from as low as $20 to over $500 depending on parts and labor needed.
Conclusion
The P1247 code on a 7.3 Powerstroke engine indicates low turbo boost pressure, which can lead to significant performance issues if not addressed promptly. By understanding its symptoms and causes, vehicle owners can take proactive steps towards troubleshooting and resolving this error code effectively. Regular maintenance and timely repairs are essential for ensuring optimal engine performance and longevity.
FAQs
- What does P1247 mean?
P1247 indicates low turbo boost pressure detected by the PCM in a 7.3 Powerstroke engine. - How serious is a P1247 code?
Ignoring this code can lead to long-term engine problems and reduced vehicle performance. - Can I drive my truck with a P1247 code?
It’s advisable to avoid driving until you resolve this issue as it can lead to further complications. - What should I check first when troubleshooting P1247?
Start by inspecting the MAP sensor hose for any damage or leaks. - How much will it cost to fix a P1247 code?
Repair costs can range from $20 for minor fixes to over $500 for more extensive repairs.