DTC B2790: Id Code Box Circuit

DTC detecting condition: 

An error has occurred inside the ID code box.

Trouble symptom: 

Engine will not start.

1. CHECK DTC  .
   1. Turn the ignition switch to OFF.
   2. Using the Subaru Select Monitor, clear the keyless access system memory. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Clear Memory Mode 
   3. Turn the ignition switch to OFF → ON.
   4. Register the ID code box. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. Contact an Authorized Subaru Dealership.
   5. Read the DTC using Subaru Select Monitor. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) 

   Is DTC B2790 displayed?

   Yes: Replace the ID code box. Ref. to SECURITY AND LOCKS>ID Code Box

   No: ID code box registration was not performed properly.