RCU_a021_BBstatusChecksum

Brake Booster (BB) status message checksum is incorrect.

 Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

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

Description

Brake Booster (BB) status message checksum is incorrect.

Cause

The RCU receives the BB_status CAN message with incorrect CRC for longer than 100 milliseconds.

Clear condition

The Redundant Control Unit (RCU) receives the BB_status Controller Area Network (CAN) message with correct Cyclic Redundancy Check (CRC) for 100 milliseconds.

Models

Model Y 2025+

Visibility

service-fix

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