OBD Guide
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C056D

Brake Pedal Position Sensor Supply Voltage Circuit Low

C056D is an OBD-II diagnostic trouble code meaning: Brake Pedal Position Sensor Supply Voltage Circuit Low. Common causes: broken or damaged wiring harness, short circuit in power supply. 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 lights up
  • Incorrect operation of ABS or ESP
  • Problems with the emergency braking system
  • Reduced braking performance

Causes

  • Broken or damaged wiring harness
  • Short circuit in power supply
  • Malfunction of the brake pedal position sensor
  • Problems with the brake system control unit
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the voltage in the sensor power circuit
  3. Inspect the sensor contacts for corrosion
  4. Replace the brake pedal position sensor if necessary
  5. Check the brake system control unit

Related codes

C056EC056FC1010

Error C056D by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C056D code mean?

C056D is an OBD-II diagnostic trouble code that indicates: Brake Pedal Position Sensor Supply Voltage Circuit Low

What causes a C056D error code?

The most common causes of C056D include: Broken or damaged wiring harness; Short circuit in power supply; Malfunction of the brake pedal position sensor; Problems with the brake system control unit.

How do I fix a C056D diagnostic trouble code?

To fix C056D: Check the integrity of the wiring harness. Check the voltage in the sensor power circuit. Inspect the sensor contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C056D?

Limited driving only, diagnose soon

How much does it cost to fix C056D?

The estimated repair cost for C056D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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