OBD Guide
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C0502

Left Front Wheel Speed Sensor A Circuit Low

C0502 is an OBD-II diagnostic trouble code meaning: Left Front Wheel Speed Sensor A Circuit Low. Common causes: faulty left front wheel speed sensor, open or short circuit in sensor wiring. Estimated repair cost: $56–167.

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

Symptoms

  • The ABS indicator on the dashboard is on
  • ABS system may not work
  • Possible problems with the stabilization system (ESP)

Causes

  • Faulty left front wheel speed sensor
  • Open or short circuit in sensor wiring
  • The magnetic ring on the hub is dirty or damaged
  • Poor contact in the sensor connector
  • ABS control unit malfunction

How to Fix

  1. Check the integrity of the sensor wiring
  2. Check the sensor connector for corrosion or damage.
  3. Clean or replace the magnetic ring on the hub
  4. Check the resistance of the wheel speed sensor
  5. Replace the wheel speed sensor if necessary

Related codes

C0501C0503C0504

Error C0502 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C0502 code mean?

C0502 is an OBD-II diagnostic trouble code that indicates: Left Front Wheel Speed Sensor A Circuit Low

What causes a C0502 error code?

The most common causes of C0502 include: Faulty left front wheel speed sensor; Open or short circuit in sensor wiring; The magnetic ring on the hub is dirty or damaged; Poor contact in the sensor connector.

How do I fix a C0502 diagnostic trouble code?

To fix C0502: Check the integrity of the sensor wiring. Check the sensor connector for corrosion or damage.. Clean or replace the magnetic ring on the hub. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0502?

Limited driving only, diagnose soon

How much does it cost to fix C0502?

The estimated repair cost for C0502 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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