BMS_f156
BMS_f156_SW_BMB_Vref_bad
What does BMS_f156 mean?
Tesla fault code in the Battery Management System (BMS) module. The intent of this alert is to try to detect potential Battery Monitor Board (BMB) hardware (HW) issues related to the Analog to Digital Converter (ADC) Voltage Reference (Vref), which could lead to f107 Temperature Voltage Sense Harness (TVSH) faults. To detect a potential Vref HW issue, the Battery Management System (BMS) takes several "throw-away" samples from the ADC and makes sure they all match. If they do not match, there is a reference issue, and the alert is flagged.
Original Description
The intent of this alert is to try to detect potential Battery Monitor Board (BMB) hardware (HW) issues related to the Analog to Digital Converter (ADC) Voltage Reference (Vref), which could lead to f107 Temperature Voltage Sense Harness (TVSH) faults. To detect a potential Vref HW issue, the Battery Management System (BMS) takes several "throw-away" samples from the ADC and makes sure they all match. If they do not match, there is a reference issue, and the alert is flagged.
Severity Notes
BMS_f156 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.
Other BMS Codes
Tesla alert codes sourced from the community-maintained Tesla Alerts Dictionary. This information is for educational purposes only. Always consult Tesla Service for official diagnosis and repairs.