TESLA Fault

CHG-F066

CHG_f066_unexpectedVintBehavior

Also written as CHG_F066 / CHG F066 / CHG_f066_unexpectedVintBehavior / chg_f066_unexpectedvintbehavior

System
CHG
Charger
Type
Fault
Category
Charging
Severity
Fault (Critical)

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-F066 mean?

Tesla fault code in the Charger (CHG) module. The charger intermediate voltage reading is unexpected.

Original Description

The charger intermediate voltage reading is unexpected.

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

  • Charger alert: The charger intermediate voltage reading is unexpected.
  • Vehicle shows charging error immediately after plugging in
  • Charge port light stays red or does not respond

How to Diagnose and Resolve

  1. 1 Try a different outlet or charging cable
  2. 2 Check if your circuit breaker has tripped
  3. 3 Reboot the vehicle and attempt to charge again
  4. 4 Schedule a Tesla Service appointment — the on-board charger may need replacement

Severity Notes

CHG-F066 is classified as a Fault, indicating a critical issue in the Charger system. Do not continue driving and contact Tesla Service immediately.

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