PCS_a067_dcdcLvRationality

PCS DCDC LV bus voltage reading differs from VCFRONT LV 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 LV bus voltage reading differs from VCFRONT LV bus voltage reading by an excessive amount.

Cause

DCDC converter low voltage bus voltage sensor mismatches front vehicle controller's sensed value on CAN for more than three seconds

Clear condition

DCDC converter low voltage bus voltage sensor matches front vehicle controller'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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