DPB_a103_ecuVrViaSpiFails
Power braking assist reduced
What does the DPB_a103_ecuVrViaSpiFails alert mean?
The valve relay cannot be switched off via the SPI command of the system IC.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
System chip does not switch off the valve relay gate actuation via SPI or the feedback bit does report a wrong status, The failsafe logic test tests whether the system chip can switch off the gate actuation of the valve relay via SPI command. If the feedback does not show a switched off valve relay gate this fault is set.
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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