BMS-F143
BMS_f143_SW_BMB_OTP_Reg_Wrong
Also written as BMS_F143 / BMS F143 / BMS_f143_SW_BMB_OTP_Reg_Wrong / bms_f143_sw_bmb_otp_reg_wrong
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-F143 mean?
Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the Battery Monitor Board (BMB) OTP register does not match the expected value, and there is an illegal combination of BMS HWID and BMB ModuleID(s).
Original Description
The Battery Management System (BMS) has detected that the Battery Monitor Board (BMB) OTP register does not match the expected value, and there is an illegal combination of BMS HWID and BMB ModuleID(s).
Affected Tesla Models
What You May Notice
- Red warning light on dashboard: The Battery Management System (BMS) has detected that the Battery Monitor Board (BMB) OTP register does not match the ex
- Vehicle may refuse to drive or charge until the fault is cleared
- Sudden power reduction or shutdown may occur while driving
How to Diagnose and Resolve
- 1 Stop driving immediately and move to a safe location
- 2 Do not attempt to charge the vehicle — active fault: "The Battery Management System (BMS) has detected that the Ba"
- 3 Call Tesla Roadside Assistance (+1-877-798-3752) for a flatbed tow
- 4 At the Service Center, Tesla technicians will inspect the HV battery pack and BMS firmware
Severity Notes
BMS-F143 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.