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2003 BMW 540IT E39
4.4L V8 M62 Touring•RWD•AUTOMATIC•gas
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Repairs0Labor497Torque2179Fluid8DTC912Battery1Maintenance0Recalls0
P0001moderate severityPowertrain

Fuel Volume Regulator Control Circuit/Open

on 2003 BMW 540iT E39 4.4L V8 M62 Touring · RWD

What this code means

The PCM detected an open circuit in the fuel volume regulator control circuit. This regulator controls fuel pressure in the high-pressure fuel system.

Symptoms

  • Check Engine Light
  • Hard starting
  • Reduced power
  • Poor fuel economy

Common causes

  • Faulty fuel volume regulator
  • Damaged wiring or connectors
  • PCM failure
  • Corroded terminals

Diagnostic steps

  1. Read freeze frame data
  2. Inspect wiring to fuel volume regulator
  3. Test regulator resistance
  4. Check fuel pressure
  5. Test PCM output

Repair notes

Replace faulty fuel volume regulator or repair wiring.

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