OBD Guide
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C05B0

Brake Hydraulic Circuit C Leak

C05B0 is an OBD-II diagnostic trouble code meaning: Brake Hydraulic Circuit C Leak. Common causes: damage to brake lines, brake hose wear. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced braking performance
  • Brake system fault light comes on
  • Brake fluid leak

Causes

  • Damage to brake lines
  • Brake hose wear
  • Leaky connections
  • Damage to the master cylinder

How to Fix

  1. Check the brake fluid level
  2. Inspect brake lines and hoses for damage
  3. Replace damaged components
  4. Bleed the brake system

Related codes

C05A0C05B1C05B2

Error C05B0 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C05B0 code mean?

C05B0 is an OBD-II diagnostic trouble code that indicates: Brake Hydraulic Circuit C Leak

What causes a C05B0 error code?

The most common causes of C05B0 include: Damage to brake lines; Brake hose wear; Leaky connections; Damage to the master cylinder.

How do I fix a C05B0 diagnostic trouble code?

To fix C05B0: Check the brake fluid level. Inspect brake lines and hoses for damage. Replace damaged components. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C05B0?

Yes, but get it checked soon

How much does it cost to fix C05B0?

The estimated repair cost for C05B0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat