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2004 AUDI S4
4.2L V8•AWD•AUTOMATIC•gas•BBK
1 active safety recall on this vehicle — view recalls
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Repairs0Labor497Torque3159Fluid10DTC956Battery1Maintenance0Recalls1
U0418moderate severityNetwork

Invalid Data Received from Parking Brake Control Module

on 2004 Audi S4 4.2L V8 · AWD

What this code means

Data from the electronic parking brake module is invalid or out of range.

Symptoms

  • Parking brake warning light
  • EPB status unknown
  • Hill hold not working
  • Service parking brake message

Common causes

  • EPB module calibration lost
  • CAN bus noise
  • Module partial failure
  • EPB sensor fault

Diagnostic steps

  1. Check EPB module for codes
  2. Test EPB actuator position sensors
  3. Check CAN bus signal quality
  4. Recalibrate EPB module

Repair notes

Recalibrate electronic parking brake. Check actuator position sensors.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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