MyTeslaMate App

Signal Name	Description	Condition	Impact	Important
DIF_a069_rotorTempLimit	The rotor's temperature is too hot, limiting Drive Inverter (DIx) motor torque production.	The rotor's temperature is too hot, limiting DIx motor torque production. There may be a condition affecting DIx or the motor.	The DIx motor may not produce torque as expected. The Drive Unit may not operate as expected.	No
DIF_a064_torqueIntervention	The torque production safety monitor has detected excess torque production and inhibited Drive Inverter (DIx) torque production for the remainder of the drive cycle.	The torque production safety monitor has detected excess torque production and inhibited DIx torque production for the remainder of the drive cycle.	The torque production safety monitor will inhibit torque and excess heat production for the remainder of the drive cycle.	No
DIF_a063_bbMIA	One or more of the messages the Drive Inverter Front (DIF) Electronic Control Unit (ECU) receives periodically from the Decoupled Brake Booster (BB) ECU is not received, indicating the BB ECU may be unavailable (MIA).	One or more of the expected messages from the BB ECU is not received.	Drive system may not function as expected.	No
DIF_a062_systemLimpMode	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a condition that requires it to trigger system limp mode.	The DI ECU detects abnormal operation in the powertrain system. Alert log signal data provides information on the specific condition(s) detected.	The performance (torque and power of the drive system) is severely limited.	No
DIF_a059_heatsinkOT	Drive Inverter Warning: Heatsink over temperature	Heatsink temperature (refer to heatsinkTemp) exceeds upper temperature threshold	No direct impact. Could damage drive inverter if temperature is continuously too high.	No
DIF_a056_ambientOT	Drive Inverter Warning: Ambient over temperature	Ambient temperature (refer to pcbTemp) exceeds upper temperature threshold	No direct impact. Could damage drive inverter if temperature is continuously too high.	No
DIF_a053_unexpectedLatchState	Drive Inverter Warning: Hardware latched fault response in an unexpected state	Measured latched fault response does NOT match with expected request from DI	In the event of a sudden LV loss at speed, latched fault response may not match expectations, exposing drive unit to unexpected torque	No
DIF_a055_trqCrossCheck	The Drive Inverter (DIx) and Pedal Monitor (PM) estimate different amounts of torque production, causing a Cross Check mismatch.	The DIx and PM estimate different amounts of torque production, causing a Cross Check mismatch. There may be a condition affecting DIx's or PM's ability to measure torque.	The vehicle may not accurately measure the level of torque being produced by the Drive Unit.	No
DIF_a054_driveInverterOT	Drive Inverter Warning: Inverter over temperature	Drive Inverter temperature (refer payload signals for temperatures) exceeds upper temperature threshold	No direct impact. Could damage drive inverter if temperature is continuously too high.	No
DIF_a027_phaseCpeak	The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected an overcurrent event (or peak) in Phase C.	The DIx ECU has detected a peak in Phase C.	DIx may be inoperable.	No
DIF_a044_outletUT	Drive Inverter Warning: Outlet under temperature	DI coolant outlet temperature (refer to outletTemp) drops below lower temperature threshold	No direct impact. Could damage drive inverter if temperature is continuously too low.	No
DIF_a038_busVsensor	Drive Inverter Warning: Battery sensor bad	When HV bus is up, DI measured bus voltage very low or disagrees with BMS reported voltage	Drive unit enters unit limp mode (see DI_a126_limpMode), faults (Model 3 only)	No
DIF_a037_busUV	Drive Inverter Warning: Battery under voltage	HV bus voltage (refer to busVoltage) drops below lower voltage threshold (refer to busHighLimit)	Unable to produce torque/power from drive unit	No
DIF_a034_phaseBcurrentSensor	The Drive Inverter (DIx) Phase B current sensor is irrational.	The DIx Phase B current sensor is irrational. An irrational current may indicate a high rate of change or current measurement out of sensing bounds. There may be a condition affecting current input and output.	If the alert asserts at the beginning of a drive cycle, DIx may not enable. If the alert asserts during a drive cycle, DIx may be disabled. DIx may not function as expected.	No
DIF_a033_phaseAcurrentSensor	The Drive Inverter (DIx) Phase A current sensor is irrational.	The DIx Phase A current sensor is irrational. An irrational current may indicate a high rate of change or current measurement out of sensing bounds. There may be a condition affecting current input and output.	If the alert asserts at the beginning of a drive cycle, DIx may not enable. If the alert asserts during a drive cycle, DIx may be disabled. DIx may not function as expected.	No
DIF_a032_phaseBcurrentOffset	The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor offset has exceeded the threshold on Phase B.	The DIx ECU has detected the current sensor offset has exceeded the threshold on Phase B. Phase B hardware may need investigation.	This alert is intended for logging purposes. Phase B hardware may need investigation.	No
DIF_a031_phaseAcurrentOffset	The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor offset has exceeded the threshold on Phase A.	The DIx ECU has detected the current sensor offset has exceeded the threshold on Phase A. Phase A hardware may need investigation.	This alert is intended for logging purposes. Phase A hardware may need investigation.	No
DIF_a030_phaseCrms	The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor Root Mean Squared (RMS) current has exceeded the expected RMS threshold on Phase C.	The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase C.	DIx may not function as expected, including vehicle power being limited.	No
DIF_a029_phaseBrms	The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor Root Mean Squared (RMS) current has exceeded the expected RMS threshold on Phase B.	The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase B.	DIx may not function as expected, including vehicle power being limited.	No
DIF_a028_phaseArms	The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor Root Mean Squared (RMS) current has exceeded the expected RMS threshold on Phase A.	The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase A.	DIx may not function as expected, including vehicle power being limited.	No

DIF_a069_rotorTempLimit

The rotor's temperature is too hot, limiting Drive Inverter (DIx) motor torque production.

The rotor's temperature is too hot, limiting DIx motor torque production. There may be a condition affecting DIx or the motor.

The DIx motor may not produce torque as expected. The Drive Unit may not operate as expected.

No

DIF_a064_torqueIntervention

The torque production safety monitor has detected excess torque production and inhibited Drive Inverter (DIx) torque production for the remainder of the drive cycle.

The torque production safety monitor has detected excess torque production and inhibited DIx torque production for the remainder of the drive cycle.

The torque production safety monitor will inhibit torque and excess heat production for the remainder of the drive cycle.

No

DIF_a063_bbMIA

One or more of the messages the Drive Inverter Front (DIF) Electronic Control Unit (ECU) receives periodically from the Decoupled Brake Booster (BB) ECU is not received, indicating the BB ECU may be unavailable (MIA).

One or more of the expected messages from the BB ECU is not received.

Drive system may not function as expected.

No

DIF_a062_systemLimpMode

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a condition that requires it to trigger system limp mode.

The DI ECU detects abnormal operation in the powertrain system. Alert log signal data provides information on the specific condition(s) detected.

The performance (torque and power of the drive system) is severely limited.

No

DIF_a059_heatsinkOT

Drive Inverter Warning: Heatsink over temperature

Heatsink temperature (refer to heatsinkTemp) exceeds upper temperature threshold

No direct impact. Could damage drive inverter if temperature is continuously too high.

No

DIF_a056_ambientOT

Drive Inverter Warning: Ambient over temperature

Ambient temperature (refer to pcbTemp) exceeds upper temperature threshold

No direct impact. Could damage drive inverter if temperature is continuously too high.

No

DIF_a053_unexpectedLatchState

Drive Inverter Warning: Hardware latched fault response in an unexpected state

Measured latched fault response does NOT match with expected request from DI

In the event of a sudden LV loss at speed, latched fault response may not match expectations, exposing drive unit to unexpected torque

No

DIF_a055_trqCrossCheck

The Drive Inverter (DIx) and Pedal Monitor (PM) estimate different amounts of torque production, causing a Cross Check mismatch.

The DIx and PM estimate different amounts of torque production, causing a Cross Check mismatch. There may be a condition affecting DIx's or PM's ability to measure torque.

The vehicle may not accurately measure the level of torque being produced by the Drive Unit.

No

DIF_a054_driveInverterOT

Drive Inverter Warning: Inverter over temperature

Drive Inverter temperature (refer payload signals for temperatures) exceeds upper temperature threshold

No direct impact. Could damage drive inverter if temperature is continuously too high.

No

DIF_a027_phaseCpeak

The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected an overcurrent event (or peak) in Phase C.

The DIx ECU has detected a peak in Phase C.

DIx may be inoperable.

No

DIF_a044_outletUT

Drive Inverter Warning: Outlet under temperature

DI coolant outlet temperature (refer to outletTemp) drops below lower temperature threshold

No direct impact. Could damage drive inverter if temperature is continuously too low.

No

DIF_a038_busVsensor

Drive Inverter Warning: Battery sensor bad

When HV bus is up, DI measured bus voltage very low or disagrees with BMS reported voltage

Drive unit enters unit limp mode (see DI_a126_limpMode), faults (Model 3 only)

No

DIF_a037_busUV

Drive Inverter Warning: Battery under voltage

HV bus voltage (refer to busVoltage) drops below lower voltage threshold (refer to busHighLimit)

Unable to produce torque/power from drive unit

No

DIF_a034_phaseBcurrentSensor

The Drive Inverter (DIx) Phase B current sensor is irrational.

The DIx Phase B current sensor is irrational. An irrational current may indicate a high rate of change or current measurement out of sensing bounds. There may be a condition affecting current input and output.

If the alert asserts at the beginning of a drive cycle, DIx may not enable. If the alert asserts during a drive cycle, DIx may be disabled. DIx may not function as expected.

No

DIF_a033_phaseAcurrentSensor

The Drive Inverter (DIx) Phase A current sensor is irrational.

The DIx Phase A current sensor is irrational. An irrational current may indicate a high rate of change or current measurement out of sensing bounds. There may be a condition affecting current input and output.

If the alert asserts at the beginning of a drive cycle, DIx may not enable. If the alert asserts during a drive cycle, DIx may be disabled. DIx may not function as expected.

No

DIF_a032_phaseBcurrentOffset

The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor offset has exceeded the threshold on Phase B.

The DIx ECU has detected the current sensor offset has exceeded the threshold on Phase B. Phase B hardware may need investigation.

This alert is intended for logging purposes. Phase B hardware may need investigation.

No

DIF_a031_phaseAcurrentOffset

The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor offset has exceeded the threshold on Phase A.

The DIx ECU has detected the current sensor offset has exceeded the threshold on Phase A. Phase A hardware may need investigation.

This alert is intended for logging purposes. Phase A hardware may need investigation.

No

DIF_a030_phaseCrms

The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor Root Mean Squared (RMS) current has exceeded the expected RMS threshold on Phase C.

The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase C.

DIx may not function as expected, including vehicle power being limited.

No

DIF_a029_phaseBrms

The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor Root Mean Squared (RMS) current has exceeded the expected RMS threshold on Phase B.

The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase B.

DIx may not function as expected, including vehicle power being limited.

No

DIF_a028_phaseArms

The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected the current sensor Root Mean Squared (RMS) current has exceeded the expected RMS threshold on Phase A.

The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase A.

DIx may not function as expected, including vehicle power being limited.

No

Alerts

Alerts