OBD Guide
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C1009

Brake Fluid Level Low

C1009 is an OBD-II diagnostic trouble code meaning: Brake Fluid Level Low. Common causes: brake fluid leak, brake pad wear. Estimated repair cost: $6–56.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Brake light is on
  • Deterioration in braking performance
  • Brake fluid leaking under the car

Causes

  • Brake fluid leak
  • Brake pad wear
  • Leaking brake system
  • Natural evaporation of liquid

How to Fix

  1. Check the brake fluid level
  2. Inspect the brake system for leaks
  3. Replace worn brake pads
  4. Add brake fluid to the required level
  5. Check the system for leaks

Related codes

C1010C1011

FAQ

What does the C1009 code mean?

C1009 is an OBD-II diagnostic trouble code that indicates: Brake Fluid Level Low

What causes a C1009 error code?

The most common causes of C1009 include: Brake fluid leak; Brake pad wear; Leaking brake system; Natural evaporation of liquid.

How do I fix a C1009 diagnostic trouble code?

To fix C1009: Check the brake fluid level. Inspect the brake system for leaks. Replace worn brake pads. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1009?

Limited driving only, diagnose soon

How much does it cost to fix C1009?

The estimated repair cost for C1009 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat