IAPU family
IAPU_a020_comparatorError
Air dryer error detected
What does the IAPU_a020_comparatorError alert mean?
Comparator circuit error detected.
What you'll see in your Tesla
- Air dryer error detected
- Service is required
Potential impact
Intervention by comparator may not be possible during low pressure situation
Affected models
Semitruck
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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.