PCS-A073
PCS_a073_unexpectedAcInputVoltage
Also written as PCS_A073 / PCS A073 / PCS_a073_unexpectedAcInputVoltage / pcs_a073_unexpectedacinputvoltage
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-A073 mean?
Tesla alert code in the Power Conversion System (PCS) module. AC voltage is present when not expected (indicates a bad charge cable / EVSE) Charger detects AC input voltage when not requested for more than five seconds Charger does not detect AC input voltage when not requested
Original Description
AC voltage is present when not expected (indicates a bad charge cable / EVSE) Charger detects AC input voltage when not requested for more than five seconds Charger does not detect AC input voltage when not requested
Affected Tesla Models
What You May Notice
- Power Conversion System alert: AC voltage is present when not expected (indicates a bad charge cable / EVSE) Charger detects AC input voltage when not
- 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-A073 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.