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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Diagnostic Codes (U0100 - U1002)) >> Can Communication System >> DTC U0100: Lost Communication with ECM / PCM "A" >> Description

DTC U0100: Lost Communication with ECM / PCM "A": Description

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open. (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open.)

DTC Code DTC Detection Condition Trouble Area
U0100 No communication from ECM
  • Power source circuit of ECM
  • ECM
  • ECM branch wire or connector
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