POWERSTROKE-P20FB serious Power Stroke ›

SCR Feed Throughput Performance

The POWERSTROKE-P20FB (Power Stroke) diesel fault code means: SCR Feed Throughput Performance. This is a serious 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
intermediate
Estimated cost
$300-$1,500
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What Are the Symptoms of POWERSTROKE-P20FB?

  • CEL
  • Derate
  • Reduced DEF flow

What Causes POWERSTROKE-P20FB? (Most Likely First)

  • Clogged DEF injector Very Likely
  • Failed DEF pump pressure regulator Likely
  • Low DEF supply pressure Possible

Can I Still Drive with POWERSTROKE-P20FB?

Short distances only. POWERSTROKE-P20FB is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.

Frequently Asked Questions

What is P20FB on a 6.7L Power Stroke (Scorpion)?

P20FB on a 6.7L Power Stroke (Scorpion) (2011-present) indicates: SCR Feed Throughput Performance. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.

Can I drive with P20FB 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 P20FB?

Repair cost is typically $300-$1,500 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-P20FB?

  1. Monitor DEF pressure PID and commanded dosing rate.

  2. Replace DEF injector if clogged.

  3. Test DEF pump output pressure.

Sources 1

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

  • SAE J2012Diagnostic Trouble Code Definitions (defines P20FB as a generic OBD-II code)

Which Vehicles Commonly Get POWERSTROKE-P20FB?

  • 2011-present Ford F-250 Super Duty 6.7L Power Stroke
  • 2011-present Ford F-350 Super Duty 6.7L Power Stroke
  • 2011-present Ford F-450/F-550 Super Duty 6.7L Power Stroke
  • 2015-2019 Ford F-650/F-750 6.7L Power Stroke

Explore More

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

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