OBD Guide

C056B

Brake Pressure Sensor A Intermittent/Erratic

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

Symptoms

  • ABS/ESP indicator is on
  • Reduced braking performance
  • Unstable operation of the stabilization system

Causes

  • Faulty brake pressure sensor
  • Broken or damaged wiring harness
  • Contact corrosion
  • Circuit voltage problems

How to Fix

  1. Check the brake pressure sensor for physical damage
  2. Scan the system for additional errors
  3. Check contacts and wiring harness
  4. Replace sensor if necessary

Related codes

Error C056B by Vehicle Brand