U0109 on 2007-2013 Chevrolet Silverado — Lost Communication With Fuel Pump Control Module "A"
1 vehicles · 1 makes · $250-$600 repair
Most Reported On
U0109 is an OBD-II diagnostic trouble code meaning “Lost Communication With Fuel Pump Control Module "A".” Sets when a module loses data-bus communication with the Fuel Pump Control Module 'A', which regulates electric fuel pump operation/pressure. Loss of these messages can interrupt fuel delivery. This code is most commonly reported on 2007-2013 Chevrolet Silverado, with repair costs ranging from $250 to $600.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose U0109, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does U0109 mean?
U0109 stands for "Lost Communication With Fuel Pump Control Module "A"." Sets when a module loses data-bus communication with the Fuel Pump Control Module 'A', which regulates electric fuel pump operation/pressure. Loss of these messages can interrupt fuel delivery.
What are the most common causes of U0109?
The most common causes of U0109 are: Open, shorted, or chafed bus wiring to the fuel pump control module, Corroded or loose module connector / poor ground, Blown fuse / lost power feed, Low battery voltage, Failed fuel pump control module. The specific cause varies by vehicle.
How much does it cost to fix U0109?
Repair costs for U0109 range from $250 to $600, depending on the vehicle and root cause.
Which vehicles are affected by U0109?
Au7o has documented U0109 across 1 vehicle models from 1 manufacturers: Chevrolet.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.