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Home › Hyundai › 2021 › Ioniq Plug-In Hybrid Limited › 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

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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