Code result

P0B33

High Voltage Service Disconnect Circuit

High severity

What it means

The high-voltage service disconnect circuit reports a circuit condition. Safe HV disconnection state cannot be verified.

Is it safe to drive?

No — stop driving

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.

Most likely causes

  • Service disconnect switch failed

    high

    One of the most commonly reported causes for this code — check this first.

  • Wiring fault

    medium

    A plausible cause — test and verify before replacing parts.

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