IBST-D121
IBST_d121_rpsOffsYEeReadFail
Also written as IBST_D121 / IBST D121 / IBST_d121_rpsOffsYEeReadFail / ibst_d121_rpsoffsyeereadfail
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 IBST-D121 mean?
Tesla diagnostic code in the Integrated Brake System (IBST) module. The electrically erasable programmable ROM (EEPROM) value for the offset of the y raw signal (correction value for TLE5012? angle sensor raw signal) could not be read. The EEPROM cell may be inoperative.
Original Description
The electrically erasable programmable ROM (EEPROM) value for the offset of the y raw signal (correction value for TLE5012? angle sensor raw signal) could not be read. The EEPROM cell may be inoperative.
Affected Tesla Models
What You May Notice
- Integrated Brake System alert: The electrically erasable programmable ROM (EEPROM) value for the offset of the y raw signal (correction value for TLE50
- No noticeable change in braking performance under normal driving
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Monitor over the next few drives
- 3 Schedule service if the alert reappears
Severity Notes
IBST-D121 is a diagnostic or informational code in the Integrated Brake System system. Typically no immediate action is required.