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Home >> Hyundai >> 2019 >> Ioniq Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (3 Of 3) >> DTC U0456: Invalid Data Received From Coolant Temperature Control Module >> DTC Information >> DTC Detecting Condition
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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 electronic water pump
  3. Electronic water pump faulty
Enable Conditions
  • IG ON
Threshold Value
  • No message time from electronic water pump via external CAN
Diagnostic Time
  • Continuous
MIL On Condition
  • 2 Driving Cycles
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