TESLA Fault

CHG_f018

CHG_f018_hwLineOC

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

What does CHG_f018 mean?

Tesla fault code in the Charger (CHG) module. The charging process was interrupted by the complex programmable logic device (CPLD) due to a very sudden increase of line current above the limit threshold. The alert may be falsely set due to extreme AC line voltage disturbances from other equipment. The Gen 1 charger spec defines the alert as line peak over-current trip level shall be <= 85A with a response time < 1us. The Gen 2 charger spec defines the alert as greater than 33A (tolerance of +/- 1.7A) per phase board.

Original Description

The charging process was interrupted by the complex programmable logic device (CPLD) due to a very sudden increase of line current above the limit threshold. The alert may be falsely set due to extreme AC line voltage disturbances from other equipment. The Gen 1 charger spec defines the alert as line peak over-current trip level shall be <= 85A with a response time < 1us. The Gen 2 charger spec defines the alert as greater than 33A (tolerance of +/- 1.7A) per phase board.

Severity Notes

CHG_f018 is classified as a Fault, indicating a critical issue in the Charger system. Do not continue driving and contact Tesla Service immediately.

Other CHG Codes

CHG_d001 The alert indicates a potential internal hardware issue with... CHG_d011 CHG_f001 The charger reports a fault at the buck stage due to a detec... CHG_f002 This alert indicates the charger boost voltage is not at the... CHG_f009 The charger's Complex Programmable Logic Device (CPLD) has d... CHG_f010 This alert is set when the charger's Complex Programmable Lo... CHG_f011 The charging hardware detected that the input voltage was to... CHG_f012 The Fast Charger (FC) contactor drive circuit has shorted to...
View all CHG codes →

Tesla alert codes sourced from the community-maintained Tesla Alerts Dictionary. This information is for educational purposes only. Always consult Tesla Service for official diagnosis and repairs.