Injector Control Pressure Too Low - Engine Cranking
The POWERSTROKE-P2291 (Power Stroke) diesel fault code means: Injector Control Pressure Too Low - Engine Cranking. This is a serious severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- advanced
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What Are the Symptoms of POWERSTROKE-P2291?
- Check Engine Light on
- Hard starting or no start
- Loss of power or rough running
What Causes POWERSTROKE-P2291? (Most Likely First)
- High-pressure oil leak in the injector control system High
- Low engine oil level Moderate
- Injector control pressure regulator fault Moderate
- Weak high-pressure oil pump Moderate
Can I Still Drive with POWERSTROKE-P2291?
No — stop driving. POWERSTROKE-P2291 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What does P2291 mean on a Power Stroke?
P2291 means Injector Control Pressure Too Low - Engine Cranking. While cranking, the injector control pressure is not building to the level needed to start the engine.
Is P2291 a Power Stroke-specific code?
No. P2291 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions Ford uses to set it on its diesels are in Ford service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose POWERSTROKE-P2291?
Check the engine oil level first.
Watch commanded and actual control pressure on a scan tool while cranking.
Test the high-pressure oil system for leaks before replacing parts.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P2291 as a generic OBD-II code)
P2291 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
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