BMS-F142
BMS_f142_SW_Isolation_Degradatio
Also written as BMS_F142 / BMS F142 / BMS_f142_SW_Isolation_Degradatio / bms_f142_sw_isolation_degradatio
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-F142 mean?
Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery pack voltage has experienced a degradation. This is a warning for isolation degradation, and no action is taken based on this in the Battery Management System (BMS) firmware.
Original Description
The Battery Management System (BMS) has detected that the high voltage (HV) battery pack voltage has experienced a degradation. This is a warning for isolation degradation, and no action is taken based on this in the Battery Management System (BMS) firmware.
Affected Tesla Models
What You May Notice
- Red warning light on dashboard: The Battery Management System (BMS) has detected that the high voltage (HV) battery pack voltage has experienced a degra
- 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 hi"
- 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-F142 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.