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2.0L Turbo I4•RWD•AUTOMATIC•gas•B48B20•turbo
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U0054high severityNetwork

Control Module Communication Bus E Open

on 2016 BMW 430i 2.0L Turbo I4 · RWD

What this code means

An open circuit has been detected on communication bus E. Data cannot pass between the affected modules.

Symptoms

  • Modules not communicating
  • Warning lights active
  • Features inoperative

Common causes

  • Broken bus E wire
  • Loose or disconnected connector
  • Faulty control module
  • Corroded terminals

Diagnostic steps

  1. Scan all modules for codes
  2. Check bus E continuity
  3. Inspect connectors for damage
  4. Test module power and ground

Other Network codes on this vehicle

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