OBD Guide
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C0593

Brake Booster Motor B Phase U-V-W Current Low

C0593 is an OBD-II diagnostic trouble code meaning: Brake Booster Motor B Phase U-V-W Current Low. Common causes: broken or damaged wiring harness to the brake booster motor, brake booster motor malfunction. Estimated repair cost: $111–333.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–333 (est.)

Symptoms

  • The brake system fault indicator lights up
  • Reduced braking performance
  • Unusual sounds when the brake booster is operating

Causes

  • Broken or damaged wiring harness to the brake booster motor
  • Brake booster motor malfunction
  • Problems with the brake control unit (ECU)
  • Short circuit in the circuit

How to Fix

  1. Check the wiring harness for damage or breaks.
  2. Check the resistance and voltage on the motor phases
  3. Check the operation of the brake system control unit
  4. If necessary, replace the brake booster motor or its components.

Related codes

C0591C0592C0594

Error C0593 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C0593 code mean?

C0593 is an OBD-II diagnostic trouble code that indicates: Brake Booster Motor B Phase U-V-W Current Low

What causes a C0593 error code?

The most common causes of C0593 include: Broken or damaged wiring harness to the brake booster motor; Brake booster motor malfunction; Problems with the brake control unit (ECU); Short circuit in the circuit.

How do I fix a C0593 diagnostic trouble code?

To fix C0593: Check the wiring harness for damage or breaks.. Check the resistance and voltage on the motor phases. Check the operation of the brake system control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0593?

Limited driving only, diagnose soon

How much does it cost to fix C0593?

The estimated repair cost for C0593 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat