Code result

C0582

Brake Booster Motor A Phase U-V-W Circuit Range/Performance

High severity

What it means

Brake Booster Motor A Phase U-V-W Circuit Range/Performance: the signal is implausible or outside the valid range. The electric brake booster generates the braking assist; a motor or sensor fault can reduce or disable power-assisted braking. Safety-relevant.

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

  • Motor winding resistance drifted

    high

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

  • Sensor element aged beyond calibration window

    low

    Less common, but worth ruling out after the more likely causes.

  • Sensor mounting loose - signal damping

    low

    Less common, but worth ruling out after the more likely causes.

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