What does code U0109 mean?

Lost Communication With Fuel Pump Control Module: Communication with the fuel pump control module has been lost.

U0109 is rated as high severity. Address soon — may cause further damage.

U0109

Lost Communication With Fuel Pump Control Module

Network Code · High

What does U0109 mean?

Communication with the fuel pump control module has been lost.

System: Module Communication

U0109 is a network diagnostic trouble code indicating lost communication with fuel pump control module. This code is classified as high severity, which means: address soon — may cause further damage.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.