DTC B228B-00: Battery Circuit or Ground Circuit Energization Malfunction [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is stored when there is a malfunction in the certification ECU (smart key ECU assembly) auxiliary battery power supply circuit or ground circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|
| B228B-00 | Battery Circuit or Ground Circuit Energization Malfunction | A malfunction is detected in the certification ECU (smart key ECU assembly) auxiliary battery power supply circuit or ground circuit. (1-trip detection logic*) |
|
Power Source Control | A | DTC Output Confirmation Operation:
|
- *: Only detected while a malfunction is present.
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| The hybrid control system stopped while driving. | - |
RELATED DATA LIST AND ACTIVE TEST ITEMS
| DTC No. | Data List and Active Test |
|---|---|
| B228B-00 | - |