OBD Guide

C05D0

Brake Master Cylinder Piston Position Sensor A/B Correlation

C05D0 is an OBD-II diagnostic trouble code meaning: Brake Master Cylinder Piston Position Sensor A/B Correlation. Common causes: piston position sensor a or b faulty, damage to the sensor wiring harness. Estimated repair cost: $167โ€“444.

Severity
๐Ÿ”ด High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167โ€“444 (est.)

Symptoms

  • The brake system fault indicator is on
  • Reduced ABS/ESP performance
  • Unusual behavior of the brake pedal
  • Loss of emergency braking function

Causes

  • Piston position sensor A or B faulty
  • Damage to the sensor wiring harness
  • Mechanical problems in the master cylinder
  • Corrosion of sensor contacts
  • Problems with the brake system control unit

How to Fix

  1. Diagnostics of the brake system with a scanner
  2. Checking resistance and sensor signals
  3. Inspect the wiring harness for damage
  4. Checking the mechanical condition of the master cylinder
  5. Replacing faulty components
  6. Programming/adaptation of a new block if necessary

Related codes

Error C05D0 by Vehicle Brand

FAQ

What does the C05D0 code mean?

C05D0 is an OBD-II diagnostic trouble code that indicates: Brake Master Cylinder Piston Position Sensor A/B Correlation

What causes a C05D0 error code?

The most common causes of C05D0 include: Piston position sensor A or B faulty; Damage to the sensor wiring harness; Mechanical problems in the master cylinder; Corrosion of sensor contacts.

How do I fix a C05D0 diagnostic trouble code?

To fix C05D0: Diagnostics of the brake system with a scanner. Checking resistance and sensor signals. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C05D0?

Limited driving only, diagnose soon

How much does it cost to fix C05D0?

The estimated repair cost for C05D0 is $167โ€“444. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version ยท NationStat