MyTeslaMate
GTW family

GTW_w266_dpp1MIA

Steering assist reduced

What does the GTW_w266_dpp1MIA alert mean?

The vehicle gateway (GTW) has not received an expected state message from the Dual Power Pump 1 (DPP1) electronic control unit (ECU) via the controller area network (CAN) within the required time period, indicating the DPP1 ECU may be unavailable and power steering may be limited or unavailable.

What you'll see in your Tesla

  • Steering assist reduced
  • Steering may require increased effort

What triggers it

The GTW does not receive the state CAN message from DPP1 ECU at the expected frequency while the vehicle is in Drive.

When it clears

The GTW receives the state CAN message from DPP1 ECU as expected. Clears automatically when the vehicle exits Drive, and may be resolved completely (does not set again) when starting the next drive cycle.

Potential impact

Power steering and Autopilot features depending on DPP1, including Autosteer, may be limited or unavailable.

Affected models

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