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Service procedures 2026 firmware

Read DTCs

Common/tasks/PROC_X_READ-DTCS

Model 3 / YModel S / X (2021+)

What this task does

Reads the Diagnostic Trouble Codes (DTCs) which match the inputted DTC mask for the chosen Electronic Control Unit. From right to left: bit 0: Test Failed bit 1: Test Failed This Operation Cycle bit 2: Pending DTC bit 3: Confirmed DTC bit 4: Test Not Completed Since Last Clear bit 5: Unused bit 6: Test Not Completed This Operation Cycle bit 7: Unused

Vehicle & firmware coverage

Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.

Model 3 / Y AMD · Firmware 2026.32.3
Vehicle coverage
2024+ Model 3, 2025+ Model Y, Model Y, Pre-2024 Model 3
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
Factory, DiagLinkActive, Service, Park

Task inputs (3)

ECU

ecu_name · EnumType

The ECU you wish to query from

Firmware default: ALL

Options: ALL, TESLA, THIRD_PARTY, BMS, CP, DI, DIF, DIR, DIREL, DIRER, DIRE1L, DIRE1R, DIRE2, HVBATT, HVBATT1, HVBATT2, HVBATT3, PCS, PCSL, PCSR, VCFRONT, VCFRONT2, VCLEFTS3, VCRIGHTS1, VCSUPER, PEBS, SEBS

DTC mask

dtc_mask · EnumType

DTC mask to use to search for DTCs that match that status

Firmware default: PENDING

Options: PENDING, CONFIRMED

Set Power

set_power · Bool

Whether to set the vehicle power state

Firmware default: false

Model 3 / Y Intel · Firmware 2026.32.7
Vehicle coverage
Model Y, Pre-2024 Model 3
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
Factory, DiagLinkActive, Service, Park

Task inputs (3)

ECU

ecu_name · EnumType

The ECU you wish to query from

Firmware default: ALL

Options: ALL, TESLA, THIRD_PARTY, BMS, CP, DI, DIF, DIR, DIREL, DIRER, DIRE1L, DIRE1R, DIRE2, HVBATT, HVBATT1, HVBATT2, HVBATT3, PCS, PCSL, PCSR, VCFRONT, VCFRONT2, VCLEFTS3, VCRIGHTS1, VCSUPER, PEBS, SEBS

DTC mask

dtc_mask · EnumType

DTC mask to use to search for DTCs that match that status

Firmware default: PENDING

Options: PENDING, CONFIRMED

Set Power

set_power · Bool

Whether to set the vehicle power state

Firmware default: false

Model S / X (2021+) AMD · Firmware 2026.20.6.1
Vehicle coverage
2021+ Model S, 2021+ Model X
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
Factory, DiagLinkActive, Service, Park

Task inputs (3)

ECU

ecu_name · EnumType

The ECU you wish to query from

Firmware default: ALL

Options: ALL, TESLA, THIRD_PARTY, BMS, CP, DI, DIF, DIR, DIREL, DIRER, DIRE1L, DIRE1R, DIRE2, HVBATT, HVBATT1, HVBATT2, HVBATT3, PCS, PCSL, PCSR, VCFRONT, VCFRONT2, VCLEFTS3, VCRIGHTS1, VCSUPER, PEBS, SEBS

DTC mask

dtc_mask · EnumType

DTC mask to use to search for DTCs that match that status

Firmware default: PENDING

Options: PENDING, CONFIRMED

Set Power

set_power · Bool

Whether to set the vehicle power state

Firmware default: false

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Clear DTCs

Clears the diagnostic data on the chosen Electronic Control Unit (ECU). This will clear any active Diagnostic Trouble Codes (DTC). DTC functionality may not exist on all ECUs depending on the platform.

PROC_X_CLEAR-DTCS

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Clear the Mando Redundant HCU (RCU) Diagnostic Trouble Codes (DTC).

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