DTC B1406 SCU_EEPROM

DTC detecting condition: 

• Defective security control module
• ROM of security control module cannot be accessed
  CAUTION: When the security control module is replaced, registration of the immobilizer system is required. For details, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.

Fig 1: SCU EEPROM Diagnosis Flowchart

Courtesy of SUBARU OF AMERICA, INC.