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Home >> Toyota >> 2023 >> Prius XLE >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (HEV) - Circuit Tests (1 Of 3) & Diagnostic Codes >> CAN COMMUNICATION SYSTEM (for HEV Model) >> DTC B1020-04: Central Gateway ECU System Internal Failure [12/2022 - ] >> Description

DTC B1020-04: Central Gateway ECU System Internal Failure [12/2022 - ]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note
B1020-04 Central Gateway ECU System Internal Failure A malfunction in the non-volatile storage of the central gateway ECU (network gateway ECU) is detected. Central gateway ECU (network gateway ECU) Central Gateway A DTC Output from
  • Central gateway ECU (network gateway ECU)