BMS-F023
BMS_f023_SW_Contactors_Open_HWOC
Also written as BMS_F023 / BMS F023 / BMS_f023_SW_Contactors_Open_HWOC / bms_f023_sw_contactors_open_hwoc
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does BMS-F023 mean?
Tesla fault code in the Battery Management System (BMS) module. This warning is set as the counter for the number of Hardware Overcurrents recorded by the Battery Management System (BMS).
Original Description
This warning is set as the counter for the number of Hardware Overcurrents recorded by the Battery Management System (BMS).
Affected Tesla Models
What You May Notice
- Vehicle has experienced multiple sudden power cut-offs historically
- BMS log shows repeated overcurrent events
- Car may have intermittent power loss during spirited driving
How to Diagnose and Resolve
- 1 Review driving history for patterns — repeated highway speeds or fast acceleration may correlate
- 2 Avoid aggressive acceleration until inspected
- 3 Schedule a Tesla Service appointment proactively
- 4 Technician will retrieve BMS logs and inspect contactors for signs of arcing or welding
- 5 Contactor replacement may be recommended even if vehicle is currently operational
Severity Notes
BMS-F023 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.