EPAS3P family
EPAS3P_a128_apsCsError
Not Available
What does the EPAS3P_a128_apsCsError alert mean?
Invalid APS_eacMonitorChecksum value received
What you'll see in your Tesla
- Not Available
What triggers it
Unexpected APS_eacMonitorChecksum value received by EPAS
When it clears
Expected APS_eacMonitorChecksum value received by EPAS
Potential impact
External Angle Controller inhibited
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
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.