Injector Control Pressure Too Low - Engine Cranking

Where it lives

For P2291, the part to look at first is the injector named here.

Check these first

• A weak fuel pump that cannot build pressure during cranking
• Air in the fuel system
• A clogged fuel filter
• A failed injector control pressure sensor

What to do next

1. Read injector control pressure while cranking on a scan tool
2. Verify cranking rail pressure with a gauge
3. Bleed air from the fuel system
4. Replace the fuel filter if restricted
5. Test the fuel pump for low output during cranking
6. Clear the code and retest

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