OBD Guide

C0048

Brake Booster Travel Sensor

C0048 is an OBD-II diagnostic trouble code meaning: Brake Booster Travel Sensor. 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
  • Reduced braking performance
  • Check Engine light comes on
  • Unstable operation of the brake system

Causes

  • Brake booster stroke sensor malfunction
  • Open or short circuit in wiring harness
  • Contact contamination or oxidation
  • Problems with the brake ECU

How to Fix

  1. Check the brake booster stroke sensor for mechanical damage
  2. Check the integrity of the wiring harness and contacts
  3. Clean contacts from dirt and oxides
  4. Replace sensor if necessary
  5. Check the operation of the brake system after repair

Related codes

Error C0048 by Vehicle Brand

FAQ

What does the C0048 code mean?

C0048 is an OBD-II diagnostic trouble code that indicates: Brake Booster Travel Sensor

What causes a C0048 error code?

The most common causes of C0048 include: Brake booster stroke sensor malfunction; Open or short circuit in wiring harness; Contact contamination or oxidation; Problems with the brake ECU.

How do I fix a C0048 diagnostic trouble code?

To fix C0048: Check the brake booster stroke sensor for mechanical damage. Check the integrity of the wiring harness and contacts. Clean contacts from dirt and oxides. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0048?

Limited driving only, diagnose soon

How much does it cost to fix C0048?

The estimated repair cost for C0048 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat