POWERSTROKE-P242F moderate Power Stroke ›

Diesel Particulate Filter Restriction - Ash Accumulation

The POWERSTROKE-P242F (Power Stroke) diesel fault code means: Diesel Particulate Filter Restriction - Ash Accumulation. This is a moderate severity code.

Unverified. We could not confirm this code's definition against freely available manufacturer documentation, so treat the meaning, severity and fix guidance on this page as unconfirmed. Check it against the manufacturer's service information for your exact model and serial range before acting on it. This page is kept out of search engines for that reason, and we are working through this family manual by manual.

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Keep driving?
Short distances only
DIY difficulty
advanced
Estimated cost
$300-$3,500
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What Are the Symptoms of POWERSTROKE-P242F?

  • CEL
  • Reduced power
  • Forced regen messages
  • Poor fuel economy

What Causes POWERSTROKE-P242F? (Most Likely First)

  • DPF full of ash (6.4L DPFs are small and load up fast with short trips) Very Likely
  • Failed EGR causing extra soot loading Likely
  • Short-trip driving preventing passive regen Likely

Can I Still Drive with POWERSTROKE-P242F?

Short distances only. POWERSTROKE-P242F is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.

Frequently Asked Questions

What is P242F on a 6.4L Power Stroke?

P242F on a 6.4L Power Stroke (2008-2010) indicates: Diesel Particulate Filter Restriction - Ash Accumulation. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.

Can I drive with P242F 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 P242F?

Repair cost is typically $300-$3,500 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-P242F?

  1. Scan DPF soot load vs ash load via ForScan or Ford IDS.

  2. Attempt forced regen with scan tool once truck is at operating temp.

  3. If ash is >80%, DPF must be cleaned (professional bake service $300-$500) or replaced.

  4. Review driving pattern -- 6.4L DPFs need highway time to clear.

Sources 1

This page is built from documented references. Verify against your own service info before repair work.

  • SAE J2012Diagnostic Trouble Code Definitions (defines P242F as a generic OBD-II code)

P242F on Other Platforms

The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:

Duramax serious Diesel Particulate Filter — Ash Accumulation Hino serious DPF Ash Load at Limit - Service Required Isuzu serious DPF Ash Load at Limit - Service Required Kubota serious Diesel Particulate Filter Restriction - Ash Accumulation

Which Vehicles Commonly Get POWERSTROKE-P242F?

  • 2008-2010 Ford F-250 Super Duty 6.4L Power Stroke
  • 2008-2010 Ford F-350 Super Duty 6.4L Power Stroke
  • 2008-2010 Ford F-450/F-550 Super Duty 6.4L Power Stroke

Explore More

More Power Stroke codes → Diesel home All diesel codes Heavy-duty Guides

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