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DTC U0001 High Speed CAN Communication Bus: Description

The engine control unit and the transmission control unit are located inside the ECM. The engine control unit communicates with the transmission control unit via the Controller Area Network (CAN). If there is a problem in this intercommunication, the ECM sets the DTC.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
U0001 Following conditions are met for 2 seconds (1 trip detection logic):
  1. Ignition switch ON
  2. Battery voltage is 10 V or more
  3. No intercommunication between engine control unit and transmission control unit
 ECM
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