HVP_w039_PackContactorFellOpen

The High Voltage Processor (HVP) has detected a pack contactor has opened during a closed state.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

The pack contactor state will appear as open. The vehicle powertrain may unexpectedly lose high voltage power under load.

Description

The High Voltage Processor (HVP) has detected a pack contactor has opened during a closed state.

Cause

The HVP has detected a voltage drop across the contactor and low contactor coil current, indicating a pack contactor has opened despite being in a closed state.

Clear condition

The HVP detects the pack contactor state as open.

Models

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

Visibility

service

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