OBD Guide

C0585

Brake Booster Motor B Phase U-V-W Circuit High

C0585 is an OBD-II diagnostic trouble code meaning: Brake Booster Motor B Phase U-V-W Circuit High. Common causes: broken or damaged wiring harness, brake booster motor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Increased brake pedal force
  • The brake system fault indicator is on
  • Reduced braking performance

Causes

  • Broken or damaged wiring harness
  • Brake booster motor malfunction
  • Poor contact in connectors
  • Problem with the electronic control unit (ECU)

How to Fix

  1. Check the wiring harness for breaks or damage
  2. Check connections and connectors for corrosion or poor contact
  3. Test the brake booster motor
  4. If necessary, replace faulty components

Related codes

Error C0585 by Vehicle Brand

FAQ

What does the C0585 code mean?

C0585 is an OBD-II diagnostic trouble code that indicates: Brake Booster Motor B Phase U-V-W Circuit High

What causes a C0585 error code?

The most common causes of C0585 include: Broken or damaged wiring harness; Brake booster motor malfunction; Poor contact in connectors; Problem with the electronic control unit (ECU).

How do I fix a C0585 diagnostic trouble code?

To fix C0585: Check the wiring harness for breaks or damage. Check connections and connectors for corrosion or poor contact. Test the brake booster motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0585?

Limited driving only, diagnose soon

How much does it cost to fix C0585?

The estimated repair cost for C0585 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat