LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2021 >> Veloster N Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC U0109-00: Lost Communication With Fuel Pump Control Module >> DTC Information And Inspection >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Information And Inspection: DTC Detecting Condition

Item Detecting Condition Possible Cause
Main Action
  • Monitor CAN message.
  1. Poor connection or damaged harness
  2. Faulty ECM
  3. Faulty FECM
Prerequisite Condition
  • Engine is running with speed over 32 RPM
  • Battery voltage is higher than 10V
  • Elapsed time after ignition 'ON' is longer than 1.0 second
Threshold Value
  • No message is came from FECM for over 500 msec
Diagnostic Time
  • 2 Seconds
MIL On Condition
  • 3rd Driving Cycle
scientia non olet · About LEMON Manuals