Turbo Boost Pressure Low
The POWERSTROKE-P1247 (Power Stroke) diesel fault code means: Turbo Boost Pressure Low. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- intermediate
- Estimated cost
- $100-$2,500
Down with a Power Stroke fault on the road?
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View pilot availability →What Are the Symptoms of POWERSTROKE-P1247?
- Sluggish acceleration
- Black smoke
- Low top-end power
- CEL
What Causes POWERSTROKE-P1247? (Most Likely First)
- Failed wastegate or stuck actuator Very Likely
- Leaking boost tubes or intercooler boots Very Likely
- Plugged air filter Likely
- Worn turbocharger (shaft play) Possible
- Cracked up-pipe between manifold and turbo Possible
Can I Still Drive with POWERSTROKE-P1247?
Short distances only. POWERSTROKE-P1247 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Common Fixes by Vehicle
What techs usually find when diagnosing POWERSTROKE-P1247 on specific platforms — tap a platform for the fix and the exact part:
1999-2003 Ford F-250/F-350 7.3L Power Stroke Moderate DIY
IPR (Injection Pressure Regulator) valve - classic 7.3L issue. The screen on the IPR clogs with debris and the valve sticks. Remove the IPR from the HPOP, clean the screen, inspect the plunger. If the plunger is scored or the screen is shredded, replace the IPR and consider a new HPOP if mileage is high.
Labor: 1.5 hrsFrequently Asked Questions
What is P1247 on a 7.3L Power Stroke?
P1247 on a 7.3L Power Stroke (1994-2003) indicates: Turbo Boost Pressure Low. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P1247 on my Power Stroke?
Only drive short distances to get to a repair facility. Continued operation may cause further damage.
How much does it cost to fix P1247?
Repair cost is typically $100-$2,500 depending on the underlying cause and whether you DIY or use a shop. Diagnostic time alone runs $100-$180 at most independent diesel shops.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose POWERSTROKE-P1247?
Smoke test intake tract from turbo outlet to intake manifold.
Inspect up-pipes and turbo pedestal for cracks / soot leakage.
Check turbo shaft for axial/radial play -- any is too much on a 7.3L GTP38.
Verify wastegate actuator moves freely under boost pressure test.
P1247 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
Which Vehicles Commonly Get POWERSTROKE-P1247?
- 1994.5-1997 Ford F-250/F-350 7.3L Power Stroke
- 1999-2003 Ford F-250/F-350 Super Duty 7.3L Power Stroke
- 1999-2003 Ford F-450/F-550 Super Duty 7.3L Power Stroke
- 1994.5-2003 Ford E-350/E-450 7.3L Power Stroke
- 2000-2003 Ford Excursion 7.3L Power Stroke
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