Is IBST_D173 the same as IBST-D173?

Yes. IBST_D173, IBST D173, and IBST-D173 are alternate spellings of the same Tesla alert code. Also written as: IBST-D173, IBST_D173, IBST D173, IBST_d173_comsclEspIb3DlcErr, ibst_d173_comsclespib3dlcerr.

What symptoms can IBST-D173 cause?

Integrated Brake System alert: ComScl: PDU ESPiB3- DataLengthCode error. No noticeable change in braking performance under normal driving

What should I check for IBST-D173?

1. Reboot the vehicle 2. Monitor over the next few drives 3. Schedule service if the alert reappears

Is it safe to drive with IBST-D173?

🟢 Record the code and follow the vehicle display or OEM guidance if it appears again.

TESLA Diagnostic

IBST-D173

IBST_d173_comsclEspIb3DlcErr

Also written as IBST_D173 / IBST D173 / IBST_d173_comsclEspIb3DlcErr / ibst_d173_comsclespib3dlcerr

System

IBST

Integrated Brake System

Type

Diagnostic

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-D173 mean?

Tesla diagnostic code in the Integrated Brake System (IBST) module. ComScl: PDU ESPiB3- DataLengthCode error.

Original Description

ComScl: PDU ESPiB3- DataLengthCode error.

Affected Tesla Models

Model SModel XModel 3Model Y

What You May Notice

Integrated Brake System alert: ComScl: PDU ESPiB3- DataLengthCode error.
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-D173 is a diagnostic or informational code in the Integrated Brake System system. Typically no immediate action is required.

Other IBST Codes

IBST_a001 IBST_a002 IBST_a003 IBST_a004 IBST_a005 IBST_a006 Tesla alert code in the Integrated Brake System (IBST) modul... IBST_a007 IBST_a008

View all IBST codes →