TESLA Fault

CC_f021

CC_f021_CB_noMaster

System
CC
Climate Control
Type
Fault
Category
HVAC
Severity
Fault (Critical)

What does CC_f021 mean?

Tesla fault code in the Climate Control (CC) module. This alert was formerly named CC_f021_CB_noMaster_PT in firmware versions prior to 2017.12. If CC_f021_CB_noMaster_PT appears on the vehicle or in the logs, update the vehicle firmware to the current version.

Original Description

This alert was formerly named CC_f021_CB_noMaster_PT in firmware versions prior to 2017.12. If CC_f021_CB_noMaster_PT appears on the vehicle or in the logs, update the vehicle firmware to the current version.

Severity Notes

CC_f021 is classified as a Fault, indicating a critical issue in the Climate Control system. Do not continue driving and contact Tesla Service immediately.

Other CC Codes

CC_a001 CC_a002 CC_a003 CC_a004 CC_a005 CC_a006 CC_a007 CC_a008
View all CC 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.