MyTeslaMate
ESP family

ESP_a048_FrRWSSVDiffFault

ABS (anti-lock braking system) disabled

What does the ESP_a048_FrRWSSVDiffFault alert mean?

Right Front Wheel Speed Sensor: Plausibility against second signal failed due to monitoring of wheel speed differences.

What you'll see in your Tesla

  • ABS (anti-lock braking system) disabled
  • Drive with caution

What triggers it

Large wheel speed diff relative to other sensors detected

When it clears

Difference between all four wheel velocities has to be less than 6% for more than 1 second while the vehicle is driving straight ahead.

Potential impact

Will disable VDC/TC and degrade ABS

Affected models

Cybertruck 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.