The valve relay cannot be switched off via the SPI command of the system IC.
<0.01% (Extremely rare)
Power braking assist reduced
Braking may require increased effort
System will be running in fully degraded state. Braking may require increased effort. Hydraulic Boost Compensation will be triggered when driver pressed brake pedal.
The valve relay cannot be switched off via the SPI command of the system IC.
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.
No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.
Model Y 2025+
customer, service-fix
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