PCS-A100
PCS_a100_suspectedViperChipIssue
Also written as PCS_A100 / PCS A100 / PCS_a100_suspectedViperChipIssue / pcs_a100_suspectedviperchipissue
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-A100 mean?
Tesla alert code in the Power Conversion System (PCS) module. An alert to indicate that this PCS may experienced viper chip issue that could impact AC charging functionality PCS does not receive CAN messages from BMS Charger does not receive all expected CAN messages from battery management system Charger recieves all expected CAN messages from battery management system Inability to AC charge, inability to precharge HV bus, inability to drive Power conversion system DCDC malfunction detected, PCS service is required When 5V logic power rail exceeds 5.8V continuously for more than 1 minute Service alert will latch untill power cycled so will not be cleard at run time Car unable to start or drive, LV battery and system cannot be supported, AC charging functionality may also be affected
Original Description
An alert to indicate that this PCS may experienced viper chip issue that could impact AC charging functionality PCS does not receive CAN messages from BMS Charger does not receive all expected CAN messages from battery management system Charger recieves all expected CAN messages from battery management system Inability to AC charge, inability to precharge HV bus, inability to drive Power conversion system DCDC malfunction detected, PCS service is required When 5V logic power rail exceeds 5.8V continuously for more than 1 minute Service alert will latch untill power cycled so will not be cleard at run time Car unable to start or drive, LV battery and system cannot be supported, AC charging functionality may also be affected
Affected Tesla Models
What You May Notice
- Power Conversion System alert: An alert to indicate that this PCS may experienced viper chip issue that could impact AC charging functionality PCS does
- 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-A100 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.