MyTeslaMate App

Signal Name	Description	Condition	Impact
DIREL_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.
DIREL_a072_gateDriveFaultCounter	The phase gate drive has detected four fault related signals from the induction motor or ten from the magnet motor.	The phase gate drive has detected four fault related signals from the induction motor or ten from the magnet motor. The induction motor or magnet motor may have a condition affecting functionality.	The phase gate drive fault counter may block any power stage from enabling. The drive unit may not function as expected.
DIREL_a073_motorSpeed	The Drive Unit resolver (motor speed sensor) has detected the motor exceeding typical speed.	The Drive Unit resolver has detected the motor exceeding typical speed. The rotor or rotor shaft may have a condition affecting functionality.	The motor is exceeding typical speed. The motor and Drive Unit may not function as expected.
DIREL_a075_motorSpeedMismatch	The motor speed measured by the Drive Unit resolver does not match the Anti-lock Braking System (ABS) wheel speed sensors.	The motor speed measured by the Drive Unit resolver does not match the ABS wheel speed sensors. There may be a condition affecting the functionality of the Drive Unit or wiring.	The Drive Unit may not function as expected, including a reduction in vehicle power. The vehicle's drive cycle may not function as expected, or at all.
DIREL_a076_lvSupplyOV	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery overvoltage event.	LV supply voltage to DI exceeds the set upper voltage limit.	No immediate impact. Could damage drive inverter LV hardware if LV is continuously too high.
DIREL_a077_lvSupplyUV	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery power supply undervoltage event.	LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold	Drive unit enters unit limp mode (see DI_a126_limpMode)
DIREL_a078_adcRefLow	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference below the lower rational bound.	Any ADC channel reference is below the minimum rational value.	The vehicle is blocked from shifting out of Park.
DIREL_a079_adcRefHigh	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference above the upper rational bound.	Any ADC channel reference is above the maximum rational value.	The vehicle is blocked from shifting out of Park.
DIREL_a087_gtwMIA	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the gateway (GTW) controller area network (CAN) node is missing (MIA).	The DI ECU is not receiving the expected CAN communication from the GTW, and considers it irrational or MIA.	The DI ECU is unable to monitor the state of the GTW.
DIREL_a090_pmMIA	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the pedal monitor (PM) controller area network (CAN) node is missing (MIA).	The DI ECU is not receiving the expected CAN communication from the PM, and considers it irrational or MIA.	The DI ECU is unable to monitor the state of the PM.
DIREL_a091_espMIA	The drive interface (DI) electronic control unit (ECU) detects that the electronic stability program (ESP, also known as traction control) controller area network (CAN) node is missing (MIA).	The DI ECU is not receiving the expected CAN communication from the ESP, and considers it irrational or MIA.	The DI ECU is unable to monitor the state of the ESP.
DIREL_a092_bmsMIA	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the high voltage (HV) battery management system (BMS) controller area network (CAN) node is missing (MIA).	The DI ECU is not receiving the expected CAN communication from the BMS, and considers it irrational or MIA.	The DI ECU is unable to monitor the state of the BMS.
DIREL_a096_memoryError	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a memory check error.	The bootloader cyclic redundancy check (CRC) or application CRC is not expected, or the RAM constants do not match with initialization segment in flash.	The DI processor may reset, and other functionality may be impacted due to memory corruption.
DIREL_a097_eepromError	The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an electrically erasable programmable read-only memory (EEPROM) read/write access error. Check for other alerts that may be set as a result.	There are read/write issues to EEPROM.	The DI is not able to store any record in EEPROM where the error is located, which impacts functionality on the next boot up.
DIREL_a098_intTimeTooLong	The Drive Inverter (DIx) has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.	The DIx has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.	This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
DIREL_a086_activeDischargeOn	Drive Inverter Warning: Active discharge is on but bus voltage remains high	Bus voltage is high while active discharge is ON	Potentially exposed high voltage
DIREL_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
DIREL_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)
DIREL_a035_phaseCurrentBalance	Drive Inverter Warning: Phase current imbalance	Imbalanced phase currents detected. See payload signals for reason of trigger	Drive unit enters unit limp mode (see DI_a126_limpMode)
DIRE2_a247_rotorOffsetError	Diagnsotic Alert: Irrational rotor offset detected.	Rotor offset mean estimator is above minimum rationality threshold at very low absolute torque outputs	Diagnostic alert data only, may indicate reduction in torque or excess heat accuracy

DIREL_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.

DIREL_a072_gateDriveFaultCounter

The phase gate drive has detected four fault related signals from the induction motor or ten from the magnet motor.

The phase gate drive has detected four fault related signals from the induction motor or ten from the magnet motor. The induction motor or magnet motor may have a condition affecting functionality.

The phase gate drive fault counter may block any power stage from enabling. The drive unit may not function as expected.

DIREL_a073_motorSpeed

The Drive Unit resolver (motor speed sensor) has detected the motor exceeding typical speed.

The Drive Unit resolver has detected the motor exceeding typical speed. The rotor or rotor shaft may have a condition affecting functionality.

The motor is exceeding typical speed. The motor and Drive Unit may not function as expected.

DIREL_a075_motorSpeedMismatch

The motor speed measured by the Drive Unit resolver does not match the Anti-lock Braking System (ABS) wheel speed sensors.

The motor speed measured by the Drive Unit resolver does not match the ABS wheel speed sensors. There may be a condition affecting the functionality of the Drive Unit or wiring.

The Drive Unit may not function as expected, including a reduction in vehicle power. The vehicle's drive cycle may not function as expected, or at all.

DIREL_a076_lvSupplyOV

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery overvoltage event.

LV supply voltage to DI exceeds the set upper voltage limit.

No immediate impact. Could damage drive inverter LV hardware if LV is continuously too high.

DIREL_a077_lvSupplyUV

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery power supply undervoltage event.

LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold

Drive unit enters unit limp mode (see DI_a126_limpMode)

DIREL_a078_adcRefLow

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference below the lower rational bound.

Any ADC channel reference is below the minimum rational value.

The vehicle is blocked from shifting out of Park.

DIREL_a079_adcRefHigh

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference above the upper rational bound.

Any ADC channel reference is above the maximum rational value.

The vehicle is blocked from shifting out of Park.

DIREL_a087_gtwMIA

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the gateway (GTW) controller area network (CAN) node is missing (MIA).

The DI ECU is not receiving the expected CAN communication from the GTW, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the GTW.

DIREL_a090_pmMIA

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the pedal monitor (PM) controller area network (CAN) node is missing (MIA).

The DI ECU is not receiving the expected CAN communication from the PM, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the PM.

DIREL_a091_espMIA

The drive interface (DI) electronic control unit (ECU) detects that the electronic stability program (ESP, also known as traction control) controller area network (CAN) node is missing (MIA).

The DI ECU is not receiving the expected CAN communication from the ESP, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the ESP.

DIREL_a092_bmsMIA

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the high voltage (HV) battery management system (BMS) controller area network (CAN) node is missing (MIA).

The DI ECU is not receiving the expected CAN communication from the BMS, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the BMS.

DIREL_a096_memoryError

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a memory check error.

The bootloader cyclic redundancy check (CRC) or application CRC is not expected, or the RAM constants do not match with initialization segment in flash.

The DI processor may reset, and other functionality may be impacted due to memory corruption.

DIREL_a097_eepromError

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an electrically erasable programmable read-only memory (EEPROM) read/write access error. Check for other alerts that may be set as a result.

There are read/write issues to EEPROM.

The DI is not able to store any record in EEPROM where the error is located, which impacts functionality on the next boot up.

DIREL_a098_intTimeTooLong

The Drive Inverter (DIx) has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.

The DIx has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.

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

DIREL_a086_activeDischargeOn

Drive Inverter Warning: Active discharge is on but bus voltage remains high

Bus voltage is high while active discharge is ON

Potentially exposed high voltage

DIREL_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

DIREL_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)

DIREL_a035_phaseCurrentBalance

Drive Inverter Warning: Phase current imbalance

Imbalanced phase currents detected. See payload signals for reason of trigger

Drive unit enters unit limp mode (see DI_a126_limpMode)

DIRE2_a247_rotorOffsetError

Diagnsotic Alert: Irrational rotor offset detected.

Rotor offset mean estimator is above minimum rationality threshold at very low absolute torque outputs

Diagnostic alert data only, may indicate reduction in torque or excess heat accuracy

Alerts

Alerts