IAPU family
IAPU_a051_smChecksumError
Air dryer error detected
What does the IAPU_a051_smChecksumError alert mean?
Software internal error.
What you'll see in your Tesla
- Air dryer error detected
- Service is required
Potential impact
No electronic governing (The system is continuously in load till the safety valve opens at 13.5 Bar), No regeneration, No pressure indication, Red Stop Lamp, Diagnostic unavailable
Affected models
Semitruck
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.