PCS-A006
PCS_a006_chgPrechargeFailedScr
Also written as PCS_A006 / PCS A006 / PCS_a006_chgPrechargeFailedScr / pcs_a006_chgprechargefailedscr
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-A006 mean?
Tesla alert code in the Power Conversion System (PCS) module. Charger failed to precharge the intermediate bus during SCR precharge SCR precharge portion of charger phase startup sequence failed AC voltage not present while being commanded to charge Charger does not detect AC input voltage to phase while starting up Inability to start AC charging Charger detects phase termperature is too high to continue charging Charger phase temperature exceeds overtemperature threshold for more than one second Charger phase temperature is below overtemperature clear threshold for more than five seconds PCS DCDC detects 12V bus voltage is lower than the safety threshold to continue its operation DCDC converter detects that low voltage bus voltage is below undervoltage threshold PCS detects the HV bus impedance is higher than the expected value DCDC converter detects high impedance on HV bus when precharging (capacitance too low) Charger failed to keep intermediate bus at required voltage Charger intermediate bus voltage is below minimum voltage threshold
Original Description
Charger failed to precharge the intermediate bus during SCR precharge SCR precharge portion of charger phase startup sequence failed AC voltage not present while being commanded to charge Charger does not detect AC input voltage to phase while starting up Inability to start AC charging Charger detects phase termperature is too high to continue charging Charger phase temperature exceeds overtemperature threshold for more than one second Charger phase temperature is below overtemperature clear threshold for more than five seconds PCS DCDC detects 12V bus voltage is lower than the safety threshold to continue its operation DCDC converter detects that low voltage bus voltage is below undervoltage threshold PCS detects the HV bus impedance is higher than the expected value DCDC converter detects high impedance on HV bus when precharging (capacitance too low) Charger failed to keep intermediate bus at required voltage Charger intermediate bus voltage is below minimum voltage threshold
Affected Tesla Models
What You May Notice
- Power Conversion System alert: Charger failed to precharge the intermediate bus during SCR precharge SCR precharge portion of charger phase startup seq
- 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-A006 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.