MyTeslaMate App

Signal Name	Description	Condition	Impact
STO_a103_mcuSelfTest	Steering Torque Overlay (STO) assist halted due to microcontroller self test startup failure.	Internal: microcontroller self test failure on startup	Steering Assist reduced
STO_a102_lkaPwrCal2	Steering Torque Overlay (STO) assist may be affected due to lane keep assist power calibration memory startup error 2.	Internal: lane keep assist power calibration error in memory on startup	Steering assist may be affected
STO_a059_npCurrentDiffSec	Steering Torque Overlay (STO) assist halted due to current differing between Secondary motor phases.	Secondary Internal: excessive current detected on any motor phase, yet the current differs greatly from any Primary motor phase for 5ms	Steering Assist reduced
STO_a058_npOverCurrentSec	Steering Torque Overlay (STO) assist halted due to excessive current in any Secondary motor phase.	Secondary Internal: excessive current detected on a motor phase (90 or more Amps) for 20ms	Steering Assist reduced
STO_a039_motInvFetShortSec2	Steering Torque Overlay (STO) assist halted due to Primary motor inverter driver startup short circuit failure 2.	Primary Internal: motor inverter driver over voltage detected on startup for 250ms	Steering Assist reduced
STO_a040_motControlCurr	Steering Torque Overlay (STO) assist halted due to Primary motor current control current failure.	Primary Internal: motor current invalid for 50ms	Steering Assist reduced
STO_a041_motControlVolt	Steering Torque Overlay (STO) assist halted due to Primary motor current control voltage failure.	Primary Internal: motor voltage invalid for 50ms	Steering Assist reduced
STO_a042_motNeutralPoint	Steering Torque Overlay (STO) assist halted due to Primary motor neutral point monitor startup failure.	Primary Internal: motor neutral point voltage >= 2.0 Volts on startup for 250ms	Steering Assist reduced
STO_a043_motInvFetShortSec1	Steering Torque Overlay (STO) assist halted due to Secondary motor inverter driver startup short circuit failure 1.	Secondary Internal: motor inverter driver short circuit detected on startup for 250ms	Steering Assist reduced
STO_a044_motInvFetShortSec2	Steering Torque Overlay (STO) assist halted due to Secondary motor inverter driver startup short circuit failure 2.	Secondary Internal: motor inverter driver over voltage detected on startup for 250ms	Steering Assist reduced
STO_a045_motControlCurrSec	Steering Torque Overlay (STO) assist halted due to Secondary motor current control current failure.	Secondary Internal: motor current invalid for 50ms	Steering Assist reduced
STO_a046_motControlVoltSec	Steering Torque Overlay (STO) assist halted due to Secondary motor current control voltage failure.	Secondary Internal: motor voltage invalid for 50ms	Steering Assist reduced
STO_a047_motNeutralPointSec	Steering Torque Overlay (STO) assist halted due to Secondary motor neutral point monitor startup failure.	Secondary Internal: motor neutral point voltage >= 2.0 Volts on startup for 250ms	Steering Assist reduced
STO_a048_npCurrSenOffMainInit	Steering Torque Overlay (STO) assist halted due to Primary current sensor offset startup failure.	Primary Internal: main current sensor offset failure detected on startup for 250ms	Steering Assist reduced
STO_a049_npCurrSenOffSubInit	Steering Torque Overlay (STO) assist halted due to Primary current sensor offset startup failure.	Primary Internal: sub current sensor offsetfailure detected on startup for 250ms	Steering Assist reduced
STO_a050_npCurrSenMainOffset	Steering Torque Overlay (STO) assist halted due to Primary current sensor offset failure.	Primary Internal: main current sensor offset failure detected for 5ms	Steering Assist reduced
STO_a051_npCurrSenSubOffset	Steering Torque Overlay (STO) assist halted due to Primary current sensor offset failure.	Primary Internal: sub current sensor offset failure detected for 5ms	Steering Assist reduced
STO_a052_npOverCurrent	Steering Torque Overlay (STO) assist halted due to excessive current in any Primary motor phase.	Primary Internal: excessive current detected on a motor phase (90 or more Amps) for 20ms	Steering Assist reduced
STO_a053_npCurrentDiff	Steering Torque Overlay (STO) assist halted due to current differing between Primary motor phases.	Primary Internal: excessive current detected on any motor phase, yet the current differs greatly from any Primary motor phase for 5ms	Steering Assist reduced
STO_a101_lkaPwrCal1	Steering Torque Overlay (STO) assist may be affected due to lane keep assist power calibration memory startup error 1.	Internal: lane keep assist power calibration error in memory on startup	Steering assist may be affected

STO_a103_mcuSelfTest

Steering Torque Overlay (STO) assist halted due to microcontroller self test startup failure.

Internal: microcontroller self test failure on startup

Steering Assist reduced

STO_a102_lkaPwrCal2

Steering Torque Overlay (STO) assist may be affected due to lane keep assist power calibration memory startup error 2.

Internal: lane keep assist power calibration error in memory on startup

Steering assist may be affected

STO_a059_npCurrentDiffSec

Steering Torque Overlay (STO) assist halted due to current differing between Secondary motor phases.

Secondary Internal: excessive current detected on any motor phase, yet the current differs greatly from any Primary motor phase for 5ms

Steering Assist reduced

STO_a058_npOverCurrentSec

Steering Torque Overlay (STO) assist halted due to excessive current in any Secondary motor phase.

Secondary Internal: excessive current detected on a motor phase (90 or more Amps) for 20ms

Steering Assist reduced

STO_a039_motInvFetShortSec2

Steering Torque Overlay (STO) assist halted due to Primary motor inverter driver startup short circuit failure 2.

Primary Internal: motor inverter driver over voltage detected on startup for 250ms

Steering Assist reduced

STO_a040_motControlCurr

Steering Torque Overlay (STO) assist halted due to Primary motor current control current failure.

Primary Internal: motor current invalid for 50ms

Steering Assist reduced

STO_a041_motControlVolt

Steering Torque Overlay (STO) assist halted due to Primary motor current control voltage failure.

Primary Internal: motor voltage invalid for 50ms

Steering Assist reduced

STO_a042_motNeutralPoint

Steering Torque Overlay (STO) assist halted due to Primary motor neutral point monitor startup failure.

Primary Internal: motor neutral point voltage >= 2.0 Volts on startup for 250ms

Steering Assist reduced

STO_a043_motInvFetShortSec1

Steering Torque Overlay (STO) assist halted due to Secondary motor inverter driver startup short circuit failure 1.

Secondary Internal: motor inverter driver short circuit detected on startup for 250ms

Steering Assist reduced

STO_a044_motInvFetShortSec2

Steering Torque Overlay (STO) assist halted due to Secondary motor inverter driver startup short circuit failure 2.

Secondary Internal: motor inverter driver over voltage detected on startup for 250ms

Steering Assist reduced

STO_a045_motControlCurrSec

Steering Torque Overlay (STO) assist halted due to Secondary motor current control current failure.

Secondary Internal: motor current invalid for 50ms

Steering Assist reduced

STO_a046_motControlVoltSec

Steering Torque Overlay (STO) assist halted due to Secondary motor current control voltage failure.

Secondary Internal: motor voltage invalid for 50ms

Steering Assist reduced

STO_a047_motNeutralPointSec

Steering Torque Overlay (STO) assist halted due to Secondary motor neutral point monitor startup failure.

Secondary Internal: motor neutral point voltage >= 2.0 Volts on startup for 250ms

Steering Assist reduced

STO_a048_npCurrSenOffMainInit

Steering Torque Overlay (STO) assist halted due to Primary current sensor offset startup failure.

Primary Internal: main current sensor offset failure detected on startup for 250ms

Steering Assist reduced

STO_a049_npCurrSenOffSubInit

Steering Torque Overlay (STO) assist halted due to Primary current sensor offset startup failure.

Primary Internal: sub current sensor offsetfailure detected on startup for 250ms

Steering Assist reduced

STO_a050_npCurrSenMainOffset

Steering Torque Overlay (STO) assist halted due to Primary current sensor offset failure.

Primary Internal: main current sensor offset failure detected for 5ms

Steering Assist reduced

STO_a051_npCurrSenSubOffset

Steering Torque Overlay (STO) assist halted due to Primary current sensor offset failure.

Primary Internal: sub current sensor offset failure detected for 5ms

Steering Assist reduced

STO_a052_npOverCurrent

Steering Torque Overlay (STO) assist halted due to excessive current in any Primary motor phase.

Primary Internal: excessive current detected on a motor phase (90 or more Amps) for 20ms

Steering Assist reduced

STO_a053_npCurrentDiff

Steering Torque Overlay (STO) assist halted due to current differing between Primary motor phases.

Primary Internal: excessive current detected on any motor phase, yet the current differs greatly from any Primary motor phase for 5ms

Steering Assist reduced

STO_a101_lkaPwrCal1

Steering Torque Overlay (STO) assist may be affected due to lane keep assist power calibration memory startup error 1.

Internal: lane keep assist power calibration error in memory on startup

Steering assist may be affected

Alerts

Alerts