TESLA Alert
PCS-A050
PCS_a050_dcdc12VsupportFaulted
Also written as PCS_A050 / PCS A050 / PCS_a050_dcdc12VsupportFaulted / pcs_a050_dcdc12vsupportfaulted
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 PCS-A050 mean?
Tesla alert code in the Power Conversion System (PCS) module. DCDC converter 12V support has faulted Inability to support 12V system
Original Description
DCDC converter 12V support has faulted Inability to support 12V system
Affected Tesla Models
Model SModel XModel 3Model Y
What You May Notice
- Power Conversion System alert: DCDC converter 12V support has faulted Inability to support 12V system
- DC-DC converter issue may affect 12V system (lights, accessories)
- Alert shown in the Tesla app
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Check if 12V accessories (lights, door handles) are behaving normally
- 3 Schedule a Tesla Service appointment for PCS inspection
Severity Notes
PCS-A050 is an Alert in the Power Conversion System system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.