2012 ford f-450 with a 6.7 code p1247

Good evening, I have a 2012 Ford F-450 with a 6.7 engine, and I’m getting a code P1247 indicating low turbo boost pressure.

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The P1247 code indicates low turbo boost pressure. This can be caused by several issues:

  • Leaking manifold hose: Cracks or loose fittings in the manifold hose can cause air to escape, leading to a drop in pressure.
  • Failing MAP sensor: The Manifold Absolute Pressure (MAP) sensor might be failing and unable to register accurate air pressure.
  • Leaking MAP hose: The MAP hose can harden and crack over time due to high engine temperatures.
  • Faulty turbo unit: A failing turbo unit will deliver lower boost pressure.
  • Wiring issues: Damaged or corroded wiring harnesses and connectors can also cause this issue.

To diagnose and fix this issue, you can follow these steps:

  1. Inspect the MAP sensor hose for any damage or loose fittings.
  2. Check the intake manifolds for cracks or restrictions.
  3. Test the MAP sensor to ensure it is functioning correctly.
  4. Inspect the wiring harness and connectors for any damage or corrosion.

If you are not comfortable performing these checks yourself, it might be best to consult a professional mechanic.

That’s a common code pointing to turbo trouble. It could be a few things: a faulty turbocharger, a clogged intake, a problem with the boost sensor or actuator, or even a leak in the intake system.
Don’t ignore it, as it can affect performance and fuel economy. I’d recommend taking it to a mechanic familiar with the 6.7 Power Stroke. They’ll have the tools and knowledge to diagnose the issue accurately.