IAPU family
IAPU_a042_mvRegShortCircuit
Air dryer error detected
What does the IAPU_a042_mvRegShortCircuit alert mean?
Regeneration valve short circuit or external excitation.
What you'll see in your Tesla
- Air dryer error detected
- Service is required
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.