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DTC U0001 High Speed CAN Communication Circuit: Description

The engine control unit and the transmission control unit are located inside the ECM (Included in HV Control ECU). The engine control unit intercommunicates with the transmission control ECU with the Controller Area Network (CAN).

If there is a problem in this intercommunication, the ECM sets a DTC.

DIAGNOSTIC TROUBLE CODE CHART

DTC No. DTC Detection Condition Trouble Area
U0001 Following conditions are met for 2 seconds (1 trip detection logic):
  1. Engine switch on (IG)
  2. Battery voltage is 10.5 V or more
  3. No intercommunication between engine control ECU and HV Control ECU
 HV Control ECU
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