Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0100 lost communication with ecm/pcm "a"

Subaru Legacy BN/BS (2015-2019) Service Manual / Combination meter (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0100 lost communication with ecm/pcm "a"

Detected when CAN data from the engine control module (ECM) does not arrive.

NOTE:

Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE

Dtc u1433 invalid data received from eyesight

Detected when CAN data from the stereo camera does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u1235 lost communication with eyesight

Detected when CAN data from the stereo camera does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Dtc b16a3 short in front sub sensor rh (to +b)
DIAGNOSIS START CONDITION:Ignition voltage is 10 V to 16 V.DTC DETECTING CONDITION:Shorted between front sub sensor RH circuit and power supply circuitWIRING DIAGRAM:NOTE:For the coupling connector, refer to “WIRING SYSTEM”.Airbag system Airbag System > WIRING DIAGRAMSTEPCHECKYESNO1.CHE ...