OBD Guide
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C1659

Brake System Malfunction

C1659 is an OBD-II diagnostic trouble code meaning: Brake System Malfunction. Common causes: faulty wheel speed sensor, damage to abs wiring harness. Estimated repair cost: $56–333.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–333 (est.)

Symptoms

  • ABS light is on
  • Reduced braking performance
  • Brake pedal rattling
  • Activating the ESC system

Causes

  • Faulty wheel speed sensor
  • Damage to ABS wiring harness
  • ABS module failure
  • Low brake fluid level
  • Problems with the valve body

How to Fix

  1. Diagnostics with a scanner to clarify the location of the fault
  2. Checking the integrity of the ABS sensor wiring harness
  3. Measuring the resistance of wheel speed sensors
  4. Checking the brake fluid level
  5. Testing the operation of the ABS valve body
  6. Repair or replacement of faulty components
  7. Resetting the error and re-diagnosis

Related codes

C003AC0040C0110C1234

FAQ

What does the C1659 code mean?

C1659 is an OBD-II diagnostic trouble code that indicates: Brake System Malfunction

What causes a C1659 error code?

The most common causes of C1659 include: Faulty wheel speed sensor; Damage to ABS wiring harness; ABS module failure; Low brake fluid level.

How do I fix a C1659 diagnostic trouble code?

To fix C1659: Diagnostics with a scanner to clarify the location of the fault. Checking the integrity of the ABS sensor wiring harness. Measuring the resistance of wheel speed sensors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1659?

Limited driving only, diagnose soon

How much does it cost to fix C1659?

The estimated repair cost for C1659 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat