MyTeslaMate
RCU family

RCU_a038_DIsystemStatusDLC

Not Available

What does the RCU_a038_DIsystemStatusDLC alert mean?

Drive Inverter (DI) system status message was not received or message length is incorrect.

What you'll see in your Tesla

  • Not Available

What triggers it

The RCU did not receive the DI_systemStatus CAN message for longer than 100 milliseconds or DI_systemStatus is received with incorrect data length for longer than 100 milliseconds.

When it clears

The Redundant Control Unit (RCU) receives the DI_systemStatus Controller Area Network (CAN) message with correct data length for 100 milliseconds.

Potential impact

There may be an issue with the transmitting Electronic Control Unit (ECU).

Affected models

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.