Subaru Legacy BN/BS (2015-2019) Service Manual: Diagnostic procedure with diagnostic trouble code (dtc)

Subaru Legacy BN/BS (2015-2019) Service Manual / Blind spot detection rear cross traffic alert (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc)

Dtc u0073 control module communication bus off
Dtc u0101 lost communication with tcm
Dtc u0423 invalid data received from instrument panel cluster control module
Dtc u0422 invalid data received from body control module
Dtc u0416 invalid data received from vehicle dynamics control module
Dtc u0402 invalid data received from tcm
Dtc u0155 lost communication with instrument panel cluster (ipc) control module
Dtc b2350 rear radar communication error between master and slave
Dtc b2329 rear radar axis alignment incomplete
Dtc b2327 rear radar internal failure (internal electric circuit)
Dtc b2313 rear radar detect vdc
Dtc b2311 rear radar detect tcm
Dtc b2304 rear radar on-off switch stuck
Dtc b2301 rear radar circuit high
Dtc b2300 rear radar circuit low
Dtc u0140 lost communication with body control module
Dtc u0122 lost communication with vehicle dynamics control module

Wiring diagram

Refer to “BSD/RCTA System” in the wiring diagram. Blind Spot Detection/Rear Cross Traffic Alert > WIRING DIAGRAM ...

Dtc u0073 control module communication bus off

Detected when CAN line abnormality is detected.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Inspection
1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the clip (A), and loosen the clamps (B) and (C).3. Remove the air intake boot, and move it to the left side wheel apron.4. Disconnect the transmission radio ground terminal and transmission harness connector, and remove the harnes ...