PCS_a066_dcdcHvRationality

PCS DCDC HV bus voltage reading differs from HVP HV bus voltage reading by an excessive amount.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

Inability to precharge HV bus, inability to support 12V system, inability to drive

Description

PCS DCDC HV bus voltage reading differs from HVP HV bus voltage reading by an excessive amount.

Cause

DCDC converter high voltage bus voltage sensor mismatches high voltage processor's sensed value on CAN for more than three seconds

Clear condition

DCDC converter high voltage bus voltage sensor matches high voltage processor's sensed value on CAN for more than 500ms

Models

Model 3 2017-2023, Model 3 2024+, Model S 2021+, Model X 2021+, Model Y, Model Y 2025+

Visibility

service-fix

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