MyTeslaMate
STO family

STO_a058_npOverCurrentSec

Not Available

What does the STO_a058_npOverCurrentSec alert mean?

Steering Torque Overlay (STO) assist halted due to excessive current in any Secondary motor phase.

What you'll see in your Tesla

  • Not Available

What triggers it

Secondary Internal: excessive current detected on a motor phase (90 or more Amps) for 20ms

When it clears

System Reset

Potential impact

Steering Assist reduced

Affected models

Semitruck

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.