Subaru Crosstrek Service Manual: Dtc u0122 lost communication with vehicle dynamics control module

Detected when CAN data (vehicle speed signal) is not received from VDC.

NOTE:

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

Diagnostic procedure with diagnostic trouble code (dtc)

Dtc b2903 vdc data error

Other materials:

Removal
LIGHTING SYSTEM > Combination Switch (Light)REMOVALCAUTION:Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. General Description > CAUTION">1. Set the tire to the straight-ahead position.2. ...

Power supply circuit Wiring diagram
WIRING SYSTEM > Power Supply CircuitWIRING DIAGRAM1. WITHOUT PUSH BUTTON START• Engine room side• Passenger room sideNo.LoadMB-1VDC CMMB-2VDC CMMB-3Wiper relayMB-4Sub fan relayMB-5Mirror heater LHMirror heater RHRear defoggerA/C control panelMB-6Body integrated unitMB-7Main fan relay ...

Washing
CAUTION When washing your Subaru Ascent, be aware that the braking system may become wet. This can temporarily increase stopping distance. To restore normal braking performance, drive at a safe speed and gently apply the brakes to generate heat and dry the components. Avoid washing th ...