PPB family
PPB_a004_analogReferenceVoltageFault
Parking brake functions degraded
What does the PPB_a004_analogReferenceVoltageFault alert mean?
PCBA may be shorted internally.
What you'll see in your Tesla
- Parking brake functions degraded
- Parking brake may not apply or release
What triggers it
Internal PCBA Short on PPB detected
When it clears
Try ECU resets, if not working PPB may need to be replaced
Potential impact
Unable to preform checks on PPB
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.