MyTeslaMate
EPAS3S family

EPAS3S_a146_diSpdCsError

Not Available

What does the EPAS3S_a146_diSpdCsError alert mean?

Invalid DI_speedChecksum value received

What you'll see in your Tesla

  • Not Available

What triggers it

Unexpected DI_speedChecksum value received by EPAS

When it clears

Electronic Power Assist Steering (EPAS) observes DI_speedChecksum incrementing correctly

Potential impact

Electronic Power Assist Steering (EPAS) will use V_max reduced assist level if invalid DI_speed message received

Affected models

Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ Model Y Model Y 2025+

Track your Tesla's alerts automatically

Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.