EGR 'A' Control Stuck Open
The POWERSTROKE-P042E (Power Stroke) diesel fault code means: EGR 'A' Control Stuck Open. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- intermediate
- Estimated cost
- $300-$1,000
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View pilot availability →What Are the Symptoms of POWERSTROKE-P042E?
- Rough idle
- Stalling at stop
- CEL
- Loss of power
What Causes POWERSTROKE-P042E? (Most Likely First)
- Soot-stuck EGR valve Very Likely
- Failed EGR actuator Likely
- Excessive soot loading from short trips Likely
Can I Still Drive with POWERSTROKE-P042E?
Short distances only. POWERSTROKE-P042E is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What is P042E on a 6.7L Power Stroke (Scorpion)?
P042E on a 6.7L Power Stroke (Scorpion) (2011-present) indicates: EGR 'A' Control Stuck Open. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P042E 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 P042E?
Repair cost is typically $300-$1,000 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-P042E?
Remove and clean EGR valve.
Replace valve if actuator doesn't hold position.
Consider longer drive cycles or a highway run to clean up soot.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P042E as a generic OBD-II code)
P042E 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-P042E?
- 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
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