MyTeslaMate App

Signal Name	Description	Condition	Impact	Important
DIF_a108_stateTrans	The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.	The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.	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.	No
DIF_a103_lowFlow	Drive Inverter Warning: Low flow rate of fluid	Insufficient cooling to the drive inverter is detected	Drive unit enters unit limp mode (see DI_a126_limpMode)	No
DIF_a107_fpgaError	The Drive Inverter (DIx) has detected an error communicating with the Field Programmable Gate Array (FPGA).	DIx has detected an error communicating with FPGA. There may be a condition affecting the DIx control board functionality.	The DIx Gate Drive Unit may not be able to receive data from the Pedal Monitor. The vehicle's drive cycle may not function as expected.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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)	No
DIF_a061_heatsinkSensor	Drive Inverter Warning: Heatsink sensor bad	Abnormal temperature measurements from heatsink sensor	Unable to monitor heatsink sensor temperature	No
DIF_a060_heatsinkUT	Drive Inverter Warning: Heatsink under temperature	Heatsink temperature (refer to heatsinkTemp) drops below lower temperature threshold	No direct impact. Could damage drive inverter if temperature is continuously too low.	No
DIF_a058_ambientSensor	Drive Inverter Warning: Ambient sensor bad	Abnormal temperature measurements from ambient sensor	Unable to monitor ambient sensor temperature	No
DIF_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.	No
DIF_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.	No
DIF_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.	No
DIF_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.	No

DIF_a108_stateTrans

The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.

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.

No

DIF_a103_lowFlow

Drive Inverter Warning: Low flow rate of fluid

Insufficient cooling to the drive inverter is detected

Drive unit enters unit limp mode (see DI_a126_limpMode)

No

DIF_a107_fpgaError

The Drive Inverter (DIx) has detected an error communicating with the Field Programmable Gate Array (FPGA).

DIx has detected an error communicating with FPGA. There may be a condition affecting the DIx control board functionality.

The DIx Gate Drive Unit may not be able to receive data from the Pedal Monitor. The vehicle's drive cycle may not function as expected.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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)

No

DIF_a061_heatsinkSensor

Drive Inverter Warning: Heatsink sensor bad

Abnormal temperature measurements from heatsink sensor

Unable to monitor heatsink sensor temperature

No

DIF_a060_heatsinkUT

Drive Inverter Warning: Heatsink under temperature

Heatsink temperature (refer to heatsinkTemp) drops below lower temperature threshold

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

No

DIF_a058_ambientSensor

Drive Inverter Warning: Ambient sensor bad

Abnormal temperature measurements from ambient sensor

Unable to monitor ambient sensor temperature

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

DIF_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.

No

Alerts

Alerts