U0109
Systeem
Network (CAN Bus)
Scanner vereist
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Fuel Pump Control Module

Understand U0109, common causes, and the right FOXWELL scanner to diagnose it.

Fuel pump control module not on network — fuel delivery may be affected.

Veelvoorkomende symptomen

  • No-start
  • Engine stall
  • Fuel pump silent

Typische oorzaken

  • Failed fuel pump module
  • CAN wiring
  • In-tank module connector corrosion

Welke scanner heb je nodig?

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

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen FOXWELL scanners

Veelgestelde vragen

Can I diagnose U0109 with a basic code reader?
U0109 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with U0109?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.