EPAS3P family
EPAS3P_a080_ecuInitArbError
Not Available
What does the EPAS3P_a080_ecuInitArbError alert mean?
Power-up arbitation between primary and secondary ECU failed
What you'll see in your Tesla
- Not Available
What triggers it
Master and Slave ECUs INIT Arbitration Failed
When it clears
Clear fault and power cycle
Potential impact
Reduced steering assist and EAC inhibited
Affected models
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.