TESLA Fault
CHG-F020
CHG_f020_hwHVIL
Also written as CHG_F020 / CHG F020 / CHG_f020_hwHVIL / chg_f020_hwhvil
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-F020 mean?
Tesla fault code in the Charger (CHG) module. There is resistance in the high voltage interlock loop (HVIL) due to the presence of a steady state, intermittent, or temperature issue.
Original Description
There is resistance in the high voltage interlock loop (HVIL) due to the presence of a steady state, intermittent, or temperature issue.
Affected Tesla Models
Model SModel XModel 3Model YCybertruck
What You May Notice
- Charger alert: There is resistance in the high voltage interlock loop (HVIL) due to the presence of a steady state, intermittent, or te
- Vehicle shows charging error immediately after plugging in
- Charge port light stays red or does not respond
How to Diagnose and Resolve
- 1 Try a different outlet or charging cable
- 2 Check if your circuit breaker has tripped
- 3 Reboot the vehicle and attempt to charge again
- 4 Schedule a Tesla Service appointment — the on-board charger may need replacement
Severity Notes
CHG-F020 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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