DPB_a104_ecuWdStartuptestFault
Power braking assist reduced
What does the DPB_a104_ecuWdStartuptestFault alert mean?
During failsafe logic test actual and expected WD status of System IC differ.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
Erroneous safety logic within system chip or feedback of system chip is wrong. During failsafe logic test the watchdog status feedback from the system chip is tested against several patterns according to the ongoing sub test. If the watchdog status is not as expected this fault is logged.
When it clears
No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.
Potential impact
System will be running in fully degraded state. Braking may require increased effort. Hydraulic Boost Compensation will be triggered when driver pressed brake pedal.
Affected models
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