All codes/C004A

C004A

Brake Lining Wear Sensor

Moderate severity

Brake lining wear sensor reports thin pads.

Brake lining wear sensor reports thin pads.

Common causes

  • Brake pads worn out

    One of the most commonly reported causes for this code — check this first.

    high

    Typical part cost: $90-550

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First things to check

  1. 1Confirm the code with a scan tool and check for additional related codes.
  2. 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does C004A mean?

C004A means "Brake Lining Wear Sensor". It is a generic OBD-II code that points to a fault in the chassis.

What are the most common causes of C004A?

brake pads worn out — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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