MyTeslaMate
EPASTP family

EPASTP_a099_mcdTorqueMismatchFault

Not Available

What does the EPASTP_a099_mcdTorqueMismatchFault alert mean?

This alert is reported by the MotorControlDiagnostics_R12 (MCD) component if the absolute reference torque is greater than the absolute requested torque plus diagnostic limit, or they have opposite signs and the difference is greater than the limit.

What you'll see in your Tesla

  • Not Available

What triggers it

If the absolute reference torque is greater than the absolute requested torque plus diagnostic limit, or they have opposite signs and the difference is greater than the limit. EPAS application motor control diagnostics detected failure (itorque value comparison).

When it clears

Perform EPAS Software update.

Potential impact

EPAS reset. If reset more than 5 times then EPAS full loss of assist.

Affected models

Model Y Model Y 2025+

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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.