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Home >> Lexus >> 2006 >> GS 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (3UZ-FE) >> SFI System >> DTC U0001 High Speed CAN Communication Bus >> Description
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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 ECU and 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 V or more
  3. No intercommunication between engine control ECU and transmission control ECU
 ECM
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