C0024 Code – ABS / Brake System Fault

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C0024 Code – ABS / Brake System Fault

The C0024 Diagnostic Trouble Code (DTC) is a manufacturer-specific chassis code related to the Anti-lock Braking System (ABS). The exact definition depends on the vehicle manufacturer, but it commonly refers to a fault involving an ABS wheel speed sensor, brake booster circuit, or another ABS control component.

Common Symptoms

  • ABS warning light illuminated.
  • Brake warning light ON.
  • Traction Control (TCS) or Electronic Stability Control (ESC) disabled.
  • ABS function unavailable during emergency braking.

Possible Causes

  • Faulty ABS wheel speed sensor.
  • Damaged sensor wiring or poor electrical connection.
  • Corroded connectors.
  • Damaged tone ring or wheel bearing.
  • Brake booster or brake booster solenoid fault (certain vehicles).
  • ABS control module malfunction.
  • Low battery or charging system voltage.

How to Diagnose

  1. Read all ABS and chassis DTCs using a professional scan tool.
  2. Review Freeze Frame data.
  3. Monitor ABS Live Data while driving.
  4. Compare all wheel speed sensor readings.
  5. Inspect the wiring harness, connectors, and tone ring.
  6. Repair the fault, clear the code, and perform a road test.

C0024 Code Meaning by Vehicle Brand

Vehicle Brand Typical Meaning
Subaru Rear Right Wheel Speed Sensor Circuit Fault.
GM (Chevrolet, GMC, Cadillac, Buick) Brake Booster Solenoid or Brake System Circuit Fault (model dependent).
Chrysler / Dodge / Jeep / RAM Manufacturer-specific ABS system fault.
Toyota / Lexus ABS wheel speed sensor or brake actuator fault depending on the model.
Ford / Lincoln Manufacturer-specific ABS diagnostic code.
Honda / Acura ABS system fault; exact definition varies by model.
Hyundai / Kia Manufacturer-specific brake control system fault.
Volkswagen / Audi / Skoda / SEAT Manufacturer-specific ABS or brake electronics fault.

Related DTCs

  • C0021
  • C0022
  • C0023
  • C0035
  • C0040
Important: C0024 is a manufacturer-specific chassis code. Always confirm the exact definition for your vehicle using the factory service manual or a professional scan tool before replacing any ABS components.

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