MyTeslaMate
RCU family

RCU_a035_IDBpcpInvalid

Not Available

What does the RCU_a035_IDBpcpInvalid alert mean?

Integrated Dynamic Brake (IDB) circuit pressure sensor issue.

What you'll see in your Tesla

  • Not Available

What triggers it

The RCU receives the IDB_brakeCircuitPress CAN signal as Signal Not Available (SNA) or IDB_brakeCircuitPressQF as PRESSURE_FAULTED for 100 milliseconds.

When it clears

The Redundant Control Unit (RCU) receives a valid value for IDB_brakeCircuitPress and IDB_brakeCircuitPressQF on the CHASSIS and PARTY Controller Area Network (CAN) buses 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.