ESP family
ESP_a178_IBSTOutputRodActInvalid
Not Available
What does the ESP_a178_IBSTOutputRodActInvalid alert mean?
The Electronic Stability Program (ESP) electronic control unit (ECU) is receiving invalid messages from the iBooster (IBST) ECU on the Party controller area network (CAN) bus.
What you'll see in your Tesla
- Not Available
What triggers it
The ESP ECU receives invalid messages from the IBST ECU on the Party CAN bus.
When it clears
The ESP ECU begins receiving valid messages from the IBST ECU on the Party CAN bus.
Potential impact
Brake boost functionality may be limited or unavailable. Hydraulic Brake Compensation (HBC) may be activated.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
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.