Lost Communication with Fuel Pump Control Module
2011-2011 Mitsubishi Lancer 2.4L I4
The 2011 Mitsubishi Lancer is equipped with a 2.4L inline-4 engine. Below you'll find detailed u0109 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the fuel pump control module that manages fuel pump speed and pressure.
Symptoms
- Engine stalling
- No start condition
- Low fuel pressure codes
- Fuel pump not running
- Extended crank time
Common Causes
- Fuel pump module failure
- CAN bus wiring damage
- Module power loss
- Fuse blown
- Fuel pump connector issue
Diagnostic Steps
- Check fuel pump module fuse
- Test module power and ground
- Check CAN wiring
- Test fuel pump operation directly
- Check fuel pump relay
Repair Notes
Check fuel pump relay and fuse first. Module mounted near fuel tank is prone to corrosion.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0109 on Other Vehicles
Mitsubishi Colt JP
2005-2005 1.3L I4 4A90
Mitsubishi Colt JP
2005-2005 1.5L I4 4A91
Mitsubishi Colt JP
2006-2006 1.3L I4 4A90
Mitsubishi Colt JP
2006-2006 1.5L I4 4A91
Mitsubishi Colt JP
2007-2007 1.3L I4 4A90
Mitsubishi Colt JP
2007-2007 1.5L I4 4A91
Mitsubishi Colt JP
2008-2008 1.3L I4 4A90
Mitsubishi Colt JP
2008-2008 1.5L I4 4A91
Common Questions
What does code U0109 mean on a 2011-2011 Mitsubishi Lancer?
U0109 stands for "Lost Communication with Fuel Pump Control Module". Cannot communicate with the fuel pump control module that manages fuel pump speed and pressure.
What are the symptoms of U0109 on a Mitsubishi Lancer?
Common symptoms of U0109 include: Engine stalling, No start condition, Low fuel pressure codes, Fuel pump not running, Extended crank time.
What causes U0109 on a 2011-2011 Mitsubishi Lancer?
Common causes of U0109 include: Fuel pump module failure, CAN bus wiring damage, Module power loss, Fuse blown, Fuel pump connector issue.
Last updated: March 2026