OBD Guide

U055F

Invalid Data Received From Electronic Brake Booster Control Module A

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • The malfunction indicator lamp on the instrument panel lights up
  • Increased force when pressing the brake pedal
  • Loss of emergency braking assistance functions
  • Unstable operation of the ABS/ESP system
  • Errors in other related systems

Causes

  • Malfunction of the electronic brake booster module
  • Damaged wiring harness or contacts
  • Module power problems
  • Software error in the module
  • Corrosion or oxidation of contacts

How to Fix

  1. Conduct system diagnostics using a professional scanner
  2. Check the integrity of the wiring harness and contacts
  3. Check the module supply voltage
  4. Update or reflash module software
  5. If necessary, replace the electronic brake booster module
  6. Repair only from an authorized dealer

Related codes

Error U055F by Vehicle Brand