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P2291
System
Powertrain (Diesel Emissions)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Injector Control Pressure Too Low — Engine Cranking

Understand P2291, common causes, and the right TOPDON scanner to diagnose it.

ICP below minimum during cranking — classic 6.0L/6.4L Ford no-start code.

Häufige Symptome

  • Extended crank no-start
  • ICP reads low on scan tool

Typische Ursachen

  • Failed HPOP
  • Injector stiction
  • ICP sensor fault
  • Low oil level

Welchen Scanner brauchen Sie?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Nutzen Sie Live-Daten und Freeze Frame, bevor Sie Teile tauschen. ABS-, SRS- und U-Codes erfordern meist einen Vollsystem-Scanner.

Diagnose-Tipps

  • Freeze Frame erfassen, wenn der Code erstmals gesetzt wird
  • Code erst nach Behebung der Ursache löschen
  • Auf verwandte pending codes prüfen
  • Batteriespannung über 12,4 V prüfen, bevor Sie Sensoren verdächtigen

Empfohlene TOPDON Scanner

Häufig gestellte Fragen

What does P2291 mean?
P2291 indicates injector control pressure too low — engine cranking. ICP below minimum during cranking — classic 6.0L/6.4L Ford no-start code.
Can I diagnose P2291 with a basic code reader?
P2291 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for P2291?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P2291?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.