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U0105
System
Network (CAN Bus)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Fuel Injector Control Module

Understand U0105, common causes, and the right TOPDON scanner to diagnose it.

Fuel injector control module offline on some diesel or multi-ECU gasoline platforms.

Häufige Symptome

  • No-start or limp mode
  • Multiple U-codes

Typische Ursachen

  • Failed injector driver module
  • CAN wiring in engine bay
  • Low voltage
  • Blown fuse

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 U0105 mean?
U0105 indicates lost communication with fuel injector control module. Fuel injector control module offline on some diesel or multi-ECU gasoline platforms.
Can I diagnose U0105 with a basic code reader?
U0105 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 U0105?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0105?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.