IBST-A167
IBST_a167_ESPqTargetExterInvalid
Also written as IBST_A167 / IBST A167 / IBST_a167_ESPqTargetExterInvalid / ibst_a167_espqtargetexterinvalid
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-A167 mean?
Tesla alert code in the Integrated Brake System (IBST) module. Scl: ESPiB2_qTargetExternal Invalid Value U5V voltage comparator test failed. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Failure word in case of Write service to EEPROM could not complete in predefined time. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Runtime overload: x1 task jitter of the IO sensitive part is to high. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. High ohmic UB6 path detected (Large deviation between UB6 & UBB during motor actuation) SPI transfer to System ASIC failed (error frame wrong address. timeout CSIH error). ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit.
Original Description
Scl: ESPiB2_qTargetExternal Invalid Value U5V voltage comparator test failed. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Failure word in case of Write service to EEPROM could not complete in predefined time. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Runtime overload: x1 task jitter of the IO sensitive part is to high. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. High ohmic UB6 path detected (Large deviation between UB6 & UBB during motor actuation) SPI transfer to System ASIC failed (error frame wrong address. timeout CSIH error). ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit.
Affected Tesla Models
What You May Notice
- Integrated Brake System alert: Scl: ESPiB2_qTargetExternal Invalid Value U5V voltage comparator test failed. ECU internal fault, check wiring to the un
- 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-A167 is an Alert in the Integrated Brake System system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.