OBD Guide
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C05CE

Brake Master Cylinder Piston Position Sensor B Circuit Voltage Low

C05CE is an OBD-II diagnostic trouble code meaning: Brake Master Cylinder Piston Position Sensor B Circuit Voltage Low. Common causes: open or short circuit in wiring harness, piston position sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • The brake system fault indicator is on
  • Reduced braking performance
  • Incorrect operation of ABS or ESP

Causes

  • Open or short circuit in wiring harness
  • Piston position sensor malfunction
  • Poor contact in connectors
  • Brake ECU malfunction

How to Fix

  1. Check wiring harness for damage
  2. Check sensor and ECU connectors
  3. Check sensor resistance and voltage
  4. Replace sensor if necessary
  5. Check the operation of the computer

Related codes

C05CDC05CF

Error C05CE by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C05CE code mean?

C05CE is an OBD-II diagnostic trouble code that indicates: Brake Master Cylinder Piston Position Sensor B Circuit Voltage Low

What causes a C05CE error code?

The most common causes of C05CE include: Open or short circuit in wiring harness; Piston position sensor malfunction; Poor contact in connectors; Brake ECU malfunction.

How do I fix a C05CE diagnostic trouble code?

To fix C05CE: Check wiring harness for damage. Check sensor and ECU connectors. Check sensor resistance and voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C05CE?

Limited driving only, diagnose soon

How much does it cost to fix C05CE?

The estimated repair cost for C05CE is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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