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Tesla EPAS2 Alert Codes

EPAS2 reference page with 5 Tesla alert codes, 4 detailed descriptions, severity counts, and diagnostic context.

Critical

Warning

Caution

Info

What the EPAS2 system covers

EPAS2 alerts belong to Tesla's proprietary diagnostic alert system and are grouped under the network category.

Read all active alerts together instead of diagnosing a single code in isolation.

Check recent service, firmware updates, and low-voltage battery condition.

Use Tesla Service or a qualified EV technician for safety-critical systems.

Alert type breakdown

Diagnostic 5

Tesla EPAS2 code list

Rows with a linked code have a dedicated detail page.

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Code	Severity	Type	Description
EPAS2_d006 EPAS2_d006_rlyOpen	Info	Diagnostic	EPAS2_d006 - rly Open Tesla diagnostic code in the EPAS2 (EPAS2) module related to rly open.
EPAS2_d019 EPAS2_d019_mainInterlock	Info	Diagnostic	EPAS2_d019 - main Interlock Tesla diagnostic code in the EPAS2 (EPAS2) module. The Electric Power Assist Steering (EPAS) system monitors the torque requested versus the assist it is providing. If there is a large enough discrepancy, it shuts off steering to prevent unintentional steering in the wrong direction.
EPAS2_d075 EPAS2_d075_espWsQf	Info	Diagnostic	EPAS2_d075 - esp Ws Qf Tesla diagnostic code in the EPAS2 (EPAS2) module. This alert indicates the Electric Power Assist Steering (EPAS) suspects there is a possible issue with the wheel speed signal coming from the Electronic Stability Program (ESP) system.
EPAS2_d077 EPAS2_d077_pinionVelDiff	Info	Diagnostic	EPAS2_d077 - pinion Vel Diff Tesla diagnostic code in the EPAS2 (EPAS2) module. This alert indicates there is a discrepancy between the redundant steering angle signals. The sensors for these signals and the processing of them are all contained within the Electric Power Assist Steering (EPAS).
EPAS2_d079 EPAS2_d079_espPrivate1Mia	Info	Diagnostic	EPAS2_d079 - esp Private1Mia Tesla diagnostic code in the EPAS2 (EPAS2) module. This error can be ignored on Driver Assistance System (DAS) HW1 vehicles. For DAS HW2 vehicles, it indicates there are Controller Area Network (CAN) issues on the private bus or issues with the Electronic Stability Program (ESP) module.