TESLA Warning

CHG-W120

CHG_w120_HVJB_powerFault

Also written as CHG_W120 / CHG W120 / CHG_w120_HVJB_powerFault / chg_w120_hvjb_powerfault

System
CHG
Charger
Type
Warning
Category
Charging
Severity
Warning

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 CHG-W120 mean?

Tesla warning code in the Charger (CHG) module. The high voltage junction box (HVJB) 12V power supply is below 11.54V.

Original Description

The high voltage junction box (HVJB) 12V power supply is below 11.54V.

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

  • Charger alert: The high voltage junction box (HVJB) 12V power supply is below 11.54V.
  • Charging notification in the Tesla app

How to Diagnose and Resolve

  1. 1 Reboot the vehicle and retry charging
  2. 2 Try a different cable or Wall Connector
  3. 3 Schedule service if AC charging consistently underperforms

Severity Notes

CHG-W120 is a Warning in the Charger system. Schedule service soon. Monitor your vehicle for additional warnings.

Other CHG Codes

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