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:
- Inspect the MAP sensor hose for any damage or loose fittings.
- Check the intake manifolds for cracks or restrictions.
- Test the MAP sensor to ensure it is functioning correctly.
- 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.