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DTC B2790: ID BOX EEPROM Malfunction [10/2018 - 07/2022]: Description

When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2790 ID BOX EEPROM Malfunction An internal malfunction occurs in the ID code box (immobiliser code ECU) (EEPROM access malfunction) (1 trip detection logic*).
  • ID code box (immobiliser code ECU)
  • Certification ECU (smart key ECU assembly)
 DTC output confirmation operation:
  1. Perform an immobiliser set/unset operation (turn the engine switch off or on (IG)).
  1. *: Only output while a malfunction is present.
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected
  • Engine running: Engine cannot be started next trip
  • Engine stopped: Engine cannot be started
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RELATED DATA LIST AND ACTIVE TEST

DTC No. Data List and Active Test
B2790 -
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