MyTeslaMate App

Signal Name	Description	Condition	Impact
EPASTP_a080_pwmTimerSyncCheck	This alert is reported by the PWMDriverCD_TC3x component when the control cycle and tasking cycle synchronization mismatch.	EPAS application component PWM monitor detected failure (control cycle and tasking cycle synchronization mismatch).	EPAS reset. If reset more than 5 times then EPAS full loss of assist.
EPASTP_a079_gduhComErr	This alert is reported by the GDUDriverHAL_A4918 (GDUH) component when SPI buffer overflow, DMA status is not OK.	EPAS ECU GDU device monitor detected failure (serial communication buffer overflow).	EPAS reset
EPASTP_a078_dmDeadlineViolation	This alert is reported by the DeadlineMonitor_R12 (DM) component when at least one of the monitored tasks didn't finish or finished multiple times during it's configured time frame.	EPAS application operating system monitor detected task timeout or task finished multiple times during it's configured time frame on Core0.	EPAS reset
EPAS3P_a152_dcsDiagReg	x19 is a diagnostic overview register, registers 1A to 1E provides additional granularity for EPAS digital current sensor (DCS) fault concerns.	Any bit is set from the EPAS DCS x19 register	This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
EPAS3P_a151_dcsCboot	Electronic Power Assist Steering (EPAS) digital current sensor (DCS) register CREGx or CTUBx voltage less than expected.	Internal digital current sensor (DCS) CBoot flag is set	This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
EPAS3S_a014_gateDriveTxError	Gate drive SPI communication error.	Gate drive SPI communication errors	Reduced steering assist
EPAS3S_a006_sent2Error	Torque sensor 2 signal invalid.	Invalid Torque sensor 2 signal received by EPAS	Steering assist reduced and EAC inhibited
EPASTP_a012_mcusscMbistEccErr	This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure. (Memory Built-In-SelfTest failed).	EPAS microcontroller memory (M)BIST failed at startup.	EPAS full loss of assist.
EPASTP_a011_mcusscMonbistErr	This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure (The Secondary Monitor and Standby SMU Built in Self Test failed).	EPAS microcontroller (MON)BIST failed (SecondaryMonitor versus Standby SMU) at startup.	EPAS full loss of assist.
EPASTP_a010_svcIncompatibleSwVersions	This alert is reported by the SoftwareVersionChecker_R12 (SVC) component when the primary and secondary side SW version is different, reflashing is needed.	EPAS primary and secondary side SW versions are incompatible.	EPAS full loss of assist.
EPASTP_a009_mcusscLbistPermanentFail	This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU failure. Logic built-in self-test failed.	EPAS Microcontroller built-in self tests (BIST) that the SW runs after reset failed for 3 consecutive times.	EPAS full loss of assist.
EPASTP_a007_tsmcCoreTempDiff	This alert is reported by the TemperatureSensorMCUCore_TC3x (TSMC) component when there is a MCU internal failure (temperature sensor or other failure which generates uneven heating of the MCU).	EPAS uC core and power supply temperatures exceed tolerated difference.	EPAS full loss of assist.
EPASTP_a006_swrhResetByInvalidErrid	This alert is reported by the SwResetHandler_R12 (SWRH) component when there is a RAM failure: the stored error is not visible OR SW systematic failure: error not stored or not handled.	EPAS could not retrieve the reset reason store error in RAM.	EPAS full loss of assist. EPAS is unable to establish why the SW has been started.
EPASTP_a005_scpUnknownResetSource	This alert is reported by the StartupCauseProvider_R12 (SCP) component when all received causes are unknown startup causes and the determined startup cause is UNKNOWN.	EPAS detected unknown startup cause at startup.	EPAS full loss of assist. EPAS is unable to establish why the SW has been started.
EPASTP_a004_scpInputMia	This alert is reported by the StartupCauseProvider_R12 (SCP) component in case, at least one of the possible reset causes is not available after the provision time has elapsed.	EPAS has incomplete list of reset causes at startup.	EPAS has lost info about reset causes.
EPASTP_a003_pspInvalidParamset	This alert is reported by the ParameterSelectorProvider_R12 (PSP) component when Powerpack (PWP), Common (COM), or ECU parameter selection is not successful.	EPAS ECU PowerPack (PWP) ID is not compatible with the given software due to ECU parameter set.	EPAS full loss of assist.
EPASTP_a002_adcMuxErr	This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) multiplexer testing failed, the root cause also can be reference problems or short-to-GND/short-to-supply type pin errors.	Measured REF voltage or Measured GND voltage are out of range.	EPAS full loss of assist.
EPASTP_a001_adcCalibrationOrInitFail	This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) calibration cannot be started, timeout reached. MCU failure.	EPAS uC peripheral ADC self calibration timeout at startup.	EPAS full loss of assist. EPAS ADC is considered inoperable.
EPAS3S_a156_angleSensorDivergence	Electric Power Assisted Steering (EPAS) reports unexpected error between internal angle sensor and steering column control module (SCCM) angle sensor.	The steering system detects divergence between its internal angle sensor and external angle sensor greater than 30 degrees.	Angle measurement divergence could indicate steering system belt slip or other mechanical failure.
EPAS3S_a155_backupEacActive	Electric Power Assisted Steering (EPAS) reports its secondary Electronic Control Unit (ECU) activated External Angle Control (EAC).	The EPAS secondary ECU activates EAC due to a condition affecting the primary ECU.	Backup EAC is active due to a detected condition on the primary steering ECU.

EPASTP_a080_pwmTimerSyncCheck

This alert is reported by the PWMDriverCD_TC3x component when the control cycle and tasking cycle synchronization mismatch.

EPAS application component PWM monitor detected failure (control cycle and tasking cycle synchronization mismatch).

EPAS reset. If reset more than 5 times then EPAS full loss of assist.

EPASTP_a079_gduhComErr

This alert is reported by the GDUDriverHAL_A4918 (GDUH) component when SPI buffer overflow, DMA status is not OK.

EPAS ECU GDU device monitor detected failure (serial communication buffer overflow).

EPAS reset

EPASTP_a078_dmDeadlineViolation

This alert is reported by the DeadlineMonitor_R12 (DM) component when at least one of the monitored tasks didn't finish or finished multiple times during it's configured time frame.

EPAS application operating system monitor detected task timeout or task finished multiple times during it's configured time frame on Core0.

EPAS reset

EPAS3P_a152_dcsDiagReg

x19 is a diagnostic overview register, registers 1A to 1E provides additional granularity for EPAS digital current sensor (DCS) fault concerns.

Any bit is set from the EPAS DCS x19 register

This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.

EPAS3P_a151_dcsCboot

Electronic Power Assist Steering (EPAS) digital current sensor (DCS) register CREGx or CTUBx voltage less than expected.

Internal digital current sensor (DCS) CBoot flag is set

This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.

EPAS3S_a014_gateDriveTxError

Gate drive SPI communication error.

Gate drive SPI communication errors

Reduced steering assist

EPAS3S_a006_sent2Error

Torque sensor 2 signal invalid.

Invalid Torque sensor 2 signal received by EPAS

Steering assist reduced and EAC inhibited

EPASTP_a012_mcusscMbistEccErr

This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure. (Memory Built-In-SelfTest failed).

EPAS microcontroller memory (M)BIST failed at startup.

EPAS full loss of assist.

EPASTP_a011_mcusscMonbistErr

This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure (The Secondary Monitor and Standby SMU Built in Self Test failed).

EPAS microcontroller (MON)BIST failed (SecondaryMonitor versus Standby SMU) at startup.

EPAS full loss of assist.

EPASTP_a010_svcIncompatibleSwVersions

This alert is reported by the SoftwareVersionChecker_R12 (SVC) component when the primary and secondary side SW version is different, reflashing is needed.

EPAS primary and secondary side SW versions are incompatible.

EPAS full loss of assist.

EPASTP_a009_mcusscLbistPermanentFail

This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU failure. Logic built-in self-test failed.

EPAS Microcontroller built-in self tests (BIST) that the SW runs after reset failed for 3 consecutive times.

EPAS full loss of assist.

EPASTP_a007_tsmcCoreTempDiff

This alert is reported by the TemperatureSensorMCUCore_TC3x (TSMC) component when there is a MCU internal failure (temperature sensor or other failure which generates uneven heating of the MCU).

EPAS uC core and power supply temperatures exceed tolerated difference.

EPAS full loss of assist.

EPASTP_a006_swrhResetByInvalidErrid

This alert is reported by the SwResetHandler_R12 (SWRH) component when there is a RAM failure: the stored error is not visible OR SW systematic failure: error not stored or not handled.

EPAS could not retrieve the reset reason store error in RAM.

EPAS full loss of assist. EPAS is unable to establish why the SW has been started.

EPASTP_a005_scpUnknownResetSource

This alert is reported by the StartupCauseProvider_R12 (SCP) component when all received causes are unknown startup causes and the determined startup cause is UNKNOWN.

EPAS detected unknown startup cause at startup.

EPAS full loss of assist. EPAS is unable to establish why the SW has been started.

EPASTP_a004_scpInputMia

This alert is reported by the StartupCauseProvider_R12 (SCP) component in case, at least one of the possible reset causes is not available after the provision time has elapsed.

EPAS has incomplete list of reset causes at startup.

EPAS has lost info about reset causes.

EPASTP_a003_pspInvalidParamset

This alert is reported by the ParameterSelectorProvider_R12 (PSP) component when Powerpack (PWP), Common (COM), or ECU parameter selection is not successful.

EPAS ECU PowerPack (PWP) ID is not compatible with the given software due to ECU parameter set.

EPAS full loss of assist.

EPASTP_a002_adcMuxErr

This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) multiplexer testing failed, the root cause also can be reference problems or short-to-GND/short-to-supply type pin errors.

Measured REF voltage or Measured GND voltage are out of range.

EPAS full loss of assist.

EPASTP_a001_adcCalibrationOrInitFail

This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) calibration cannot be started, timeout reached. MCU failure.

EPAS uC peripheral ADC self calibration timeout at startup.

EPAS full loss of assist. EPAS ADC is considered inoperable.

EPAS3S_a156_angleSensorDivergence

Electric Power Assisted Steering (EPAS) reports unexpected error between internal angle sensor and steering column control module (SCCM) angle sensor.

The steering system detects divergence between its internal angle sensor and external angle sensor greater than 30 degrees.

Angle measurement divergence could indicate steering system belt slip or other mechanical failure.

EPAS3S_a155_backupEacActive

Electric Power Assisted Steering (EPAS) reports its secondary Electronic Control Unit (ECU) activated External Angle Control (EAC).

The EPAS secondary ECU activates EAC due to a condition affecting the primary ECU.

Backup EAC is active due to a detected condition on the primary steering ECU.

Alerts

Alerts