CC-A039
CC_a039_internalModuleOverTemp
Also written as CC_A039 / CC A039 / CC_a039_internalModuleOverTemp / cc_a039_internalmoduleovertemp
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 CC-A039 mean?
Tesla alert code in the Climate Control (CC) module. Wall connector real-time processor is too hot Real-time processor exceeds 85C Real-time processor cools to below 65C Charging will be interrupted and one red blink on LEDs info from manualCC_A017 Contactor detected as closed when it should be open info from manualCC_A010 Wall connector detects voltage on the contactor output when it should be open User resets by cycling cable, reset button, or power cycle Wall connector will not operate and there is a potential hazardous voltage present on the charge handle info from manualCC_A016 Wall connector internal voltage reference is out of acceptable range Internal voltage reference leaves acceptable range Internal voltage reference enters acceptable range AC RMS input voltage is too high info from manualCC_A007 AC RMS input voltage exceeds 320 V RMS for NA or 290 V RMS for EU/CN for more than 2 seconds AC RMS input voltage falls below 310 V RMS for NA or 280 V RMS for EU/CN for more than 2 seconds Wall connector will not allow charging while the input voltage is too high PCBA temperature exceeds threshold PCBA temperature falls below threshold Charging rate will be reduced by 50% Wall connector is configured as a slave but no master was detected info from manualCC_A021 Wall connector is configured as a slave but no master is present on the sharing network Wall connector is reconfigured or a master becomes present on the sharing network
Original Description
Wall connector real-time processor is too hot Real-time processor exceeds 85C Real-time processor cools to below 65C Charging will be interrupted and one red blink on LEDs info from manualCC_A017 Contactor detected as closed when it should be open info from manualCC_A010 Wall connector detects voltage on the contactor output when it should be open User resets by cycling cable, reset button, or power cycle Wall connector will not operate and there is a potential hazardous voltage present on the charge handle info from manualCC_A016 Wall connector internal voltage reference is out of acceptable range Internal voltage reference leaves acceptable range Internal voltage reference enters acceptable range AC RMS input voltage is too high info from manualCC_A007 AC RMS input voltage exceeds 320 V RMS for NA or 290 V RMS for EU/CN for more than 2 seconds AC RMS input voltage falls below 310 V RMS for NA or 280 V RMS for EU/CN for more than 2 seconds Wall connector will not allow charging while the input voltage is too high PCBA temperature exceeds threshold PCBA temperature falls below threshold Charging rate will be reduced by 50% Wall connector is configured as a slave but no master was detected info from manualCC_A021 Wall connector is configured as a slave but no master is present on the sharing network Wall connector is reconfigured or a master becomes present on the sharing network
Affected Tesla Models
What You May Notice
- CC-A039 may appear with another Tesla alert in the Climate Control (CC) system.
- The vehicle may limit charging, driving, comfort, or safety features depending on the active alerts.
- The alert may clear after sleep, but recurring alerts should be treated as service-relevant.
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Check for OTA software updates
- 3 Monitor over the next few drives; schedule service if alert recurs
Severity Notes
CC-A039 is an Alert in the Climate Control system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.