OBD Guide

C056F

Brake Booster Travel Sensor Circuit Low

C056F is an OBD-II diagnostic trouble code meaning: Brake Booster Travel Sensor Circuit Low. Common causes: brake booster stroke sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Increased brake pedal travel
  • Hard brake pedal
  • Brake system fault light comes on

Causes

  • Brake booster stroke sensor malfunction
  • Open or short circuit in wiring harness
  • Poor contact in connectors
  • Problems with power or circuit ground

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Check the supply voltage and ground of the sensor circuit
  3. Check the resistance of the brake booster stroke sensor
  4. Replace sensor if necessary

Related codes

Error C056F by Vehicle Brand

FAQ

What does the C056F code mean?

C056F is an OBD-II diagnostic trouble code that indicates: Brake Booster Travel Sensor Circuit Low

What causes a C056F error code?

The most common causes of C056F include: Brake booster stroke sensor malfunction; Open or short circuit in wiring harness; Poor contact in connectors; Problems with power or circuit ground.

How do I fix a C056F diagnostic trouble code?

To fix C056F: Check the integrity of the wiring harness and connectors. Check the supply voltage and ground of the sensor circuit. Check the resistance of the brake booster stroke sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C056F?

Limited driving only, diagnose soon

How much does it cost to fix C056F?

The estimated repair cost for C056F is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat