OBD Guide
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C055E

Brake Hydraulic Circuit A Leak

C055E is an OBD-II diagnostic trouble code meaning: Brake Hydraulic Circuit A Leak. Common causes: damage to brake hoses, wear of brake cylinder seals. Estimated repair cost: $56–167.

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

Symptoms

  • The brake system fault indicator lights up
  • Reduced braking performance
  • Traces of brake fluid appearing under the car

Causes

  • Damage to brake hoses
  • Wear of brake cylinder seals
  • Brake Line Corrosion
  • Leaky connections

How to Fix

  1. Visual inspection of the brake system for leaks
  2. Checking the brake fluid level
  3. Replacing damaged hoses or lines
  4. Bleeding the brake system to remove air

Related codes

C055FC0560

Error C055E by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C055E code mean?

C055E is an OBD-II diagnostic trouble code that indicates: Brake Hydraulic Circuit A Leak

What causes a C055E error code?

The most common causes of C055E include: Damage to brake hoses; Wear of brake cylinder seals; Brake Line Corrosion; Leaky connections.

How do I fix a C055E diagnostic trouble code?

To fix C055E: Visual inspection of the brake system for leaks. Checking the brake fluid level. Replacing damaged hoses or lines. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C055E?

Yes, but get it checked soon

How much does it cost to fix C055E?

The estimated repair cost for C055E is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat