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Home >> Hyundai >> 2024 >> Elantra N Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (6 Of 6) >> DTC U0109-00: Lost Communication With Fuel Pump Control Module >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

Trouble Shooting Condition Possible Cause
Main Action
  • Electrical inspection
  1. Poor contact of connector
  2. CAN communication line between Engine Control Module (ECM) and FPCM
  3. FPCM
Prerequisite Condition
  • The battery voltage is between 10V and 16V
  • Engine is running with speed over 32 RPM
  • Elapsed time after ignition "ON" is longer than 1.0 second
Threshold Value
  • Communication with the FPCM has been lost longer than 2 sec
Diagnostic Time
  • 2 sec
MIL
  • 2nd driving cycles
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