Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0401 invalid data received from ecm/pcm "a"

Subaru Legacy BN/BS (2015-2019) Service Manual / Eyesight (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0401 invalid data received from ecm/pcm "a"

Failure counter diagnosis of engine control module (ECM)

NOTE:

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

Dtc u0402 invalid data received from tcm

Failure counter diagnosis of automatic transmission control module (TCM)NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0155 lost communication with instrument panel cluster (ipc) control module

Detected when CAN data from combination meter is not transmitted to stereo camera.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Dtc p0974 shift solenoid "a" control circuit high
DTC DETECTING CONDITION:Immediately at fault recognitionTROUBLE SYMPTOM:Gear is not changed. (No up-shift)1. ENGINE TYPE FBWIRING DIAGRAM:CVT control system CVT Control System > WIRING DIAGRAMSTEPCHECKYESNO1.CHECK HARNESS.CAUTION:Start work after ATF cools down.1) Turn the ignition switch to OFF.2) ...