Alerts
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| Signal Name | Description | Condition | Impact |
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The Power Conversion System (PCS) electronic control unit (ECU) detects its DCDC converter is unable to regulate the voltage slew rate while the high voltage (HV) bus is discharging, causing the HV bus to discharge outside of the specified slew rate threshold.
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The PCS ECU detects the DCDC converter is unable to regulate the voltage slew rate while the HV bus is discharging.
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Vehicle will be unable to precharge. Guobiao direct current (GB DC) and CHAdeMO DC fast charging (FC) may not start or may be interrupted due to CHAdeMO and GB DC compatibility conditions.
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The Power Conversion System (PCS) electronic control unit (ECU) detects the electrical grid frequency droops below its nominal level, indicating the grid may be experiencing heavy loads.
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The PCS ECU detects the electrical grid frequency droops below its nominal level.
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AC charging power will be temporarily limited depending on the droop level to reduce the load on the electrical grid.
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The Power Conversion System (PCS) electronic control unit (ECU) detects the DCDC tank current period is too long, indicating the DCDC metal-oxide-semiconductor field-effect transistor (MOSFETs) are not switching properly.
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The PCS ECU detects the DCDC MOSFETs are not switching properly.
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Vehicle is unable to drive, charge, or support the low voltage (LV) battery / electrical system until the DCDC MOSFETs switch properly.
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The Power Conversion System (PCS) electronic control unit (ECU) detects a wobble signature from the Tesla Powerwall.
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The PCS ECU detects a wobble signature from the Tesla Powerwall.
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No expected impact on vehicle functionality.
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Steering system may be reducing power and functionality to prevent overheating, due to higher than nominal system temperature detected
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When part of steering system is detected to be close to its overheating limit
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Torque output may be reduced, and steering system may have reduced performance
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Motor position sensor is not calibrated
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On startup, Electronic Power Steering (EPS) detects motor position sensor calibration is incomplete
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Motor torque may not be generated
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The steering monitor detected an error affecting its calibration
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One or more modules not calibrated or calibration values do not match controller values
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Loss of steering redundancy
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The Electronic Power Steering (EPS) monitor is missing calibration data for the steering rack
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Uncalibrated front steering rack detected
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Steering control from this node is disabled
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PCS bootloader configured the clock source to use the internal clock (INTOSC2), because the DSP has reported a missing clock from the external crystal oscillator
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On boot, PCS is not using the external crystal oscillator (XTALOSC)
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Internal oscillator is less precise, potentially has system behavior impact
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PCS has detected at least one reset during the boot up process. AC charging power might be limited if phase damaged is detected
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Power conversion system detected reset while enabling a phase
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Reduced AC charge rate or inability to AC charge if pahse damaged is detected
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PCS detects one or more power converter expected AC voltage sources are missing, possibly due to bad utility wiring or vehicle HV harness connection
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Charger detects that one or more expected AC voltage sources is missing, possibly due to bad external wiring
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Reduced AC charge rate or inability to AC charge
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DCDC does not have enough cooling, DCDC system may limit its output power
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DCDC converter detects difference in ambient temperature vs. DCDC converter temperature exceeding threshold, indicating that cooling may not be sufficient
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No impact
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HV bus voltage unsafe for drive inverter while PCS DCDC is attempting to precharge HV bus
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DCDC converter detected high voltage bus voltage profile anomoly during precharge
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Inability to precharge HV bus, inability to support 12V system, inability to drive
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PCS DCDC timed out attempting to precharge HV bus
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DCDC converter timed out when attempting to precharge HV bus
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Inability to precharge HV bus, inability to support 12V system, inability to drive
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PCS has detected at least one damaged AC charging phase, AC charging power will be limited
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Power conversion system detected reset while enabling a phase, and did not attempt to re-enable phase
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Reduced AC charge rate or inability to AC charge
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PCS EEPROM software module has detected an error
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Power conversion system EEPROM software module has detected an error
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Kilowatt-hour counter functionality may be impacted, damaged phase detection may be impacted
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AC charging is stopped because DCDC is too hot
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DCDC converter temperature exceeds threshold for more than five seconds while AC charging is active
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Inability to AC charge
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The Electronic Power Steering (EPS) detects front steering rack calibration data is missing
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On startup, EPS detects front steering rack calibration data is missing
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Steering rack control is blocked. Steering performance may be degraded
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AC voltage is present when not expected (indicates a bad charge cable / EVSE)
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Charger detects AC input voltage when not requested for more than five seconds
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Inability to AC charge
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CPU2 CLA is not running
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Charger detects that control law accelerator is not running
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Inability to AC charge
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