The Lemon IndexThe other computers in the car stopped hearing from the fuel pump control module.
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
Wiring or connector fault on the data network. Then: power or ground problem at the fuel pump control module; failed fuel pump control module.
Owners named U0109 in 8 complaints to the U.S. government, most often on the Chevrolet Silverado.
Cars owners report it on
Complaints that name U0109, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2008 Chevrolet Silverado
The details
What U0109 means
The other computers in the car stopped hearing from the fuel pump control module. Features that depend on it can stop working, and several warning lights often come on together.
Can I drive with U0109?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
50% of the owner complaints that name U0109 also say the car stalls or shuts off. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of U0109
- Wiring or connector fault on the data network
- Power or ground problem at the fuel pump control module
- Failed fuel pump control module
- Weak battery
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Stalls or shuts off: 50% of complaints
- Won't start or hard to start: 38% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report U0109 most
Related codes
U0104 U0103 U0102 U0101 U0100 U0111 U0121 U0122
Quick answers
What does U0109 mean?
Lost Communication With Fuel Pump Control Module. The other computers in the car stopped hearing from the fuel pump control module. Features that depend on it can stop working, and several warning lights often come on together.
Can I drive with U0109?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
What causes U0109?
Wiring or connector fault on the data network; Power or ground problem at the fuel pump control module; Failed fuel pump control module; Weak battery.
Counts: NHTSA owner complaints whose text names U0109. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.