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U0105
System
Network (CAN Bus)
Scanner som krävs
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.

Vanliga symptom

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

Typiska orsaker

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

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade TOPDON-scannrar

Vanliga frågor

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.