LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2019 >> Ioniq Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (3 Of 3) >> DTC U0109: Lost Communication With Fuel Pump Control Module >> DTC Information >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN communication status check
  1. Poor connection
  2. CAN communication line between ECM and FPCM
  3. FPCM faulty
Enable Conditions
  • B+ is higher than 10.8V
  • IG "ON" Time greater than 0.5 sec.
Threshold Value
  • Duration of communication lost with FPCM is higher than 4 sec
Diagnostic Time
  • Continuous
MIL ON Condition
  • NO MIL
scientia non olet · About LEMON Manuals