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2019 BMW 750I
4.4L V8 Twin-Turbo N63•RWD•AUTOMATIC•gas•turbo
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Repairs0Labor489Torque5251Fluid7DTC1489Battery1Maintenance0Recalls0
C0040moderate severityChassis

Right Front Wheel Speed Sensor Circuit

on 2019 BMW 750i 4.4L V8 Twin-Turbo N63 · RWD

What this code means

Malfunction in the right front ABS wheel speed sensor.

Symptoms

  • ABS light on
  • Traction control light on
  • ABS inactive

Common causes

  • Faulty sensor
  • Tone ring damage
  • Wiring issue
  • Wheel bearing failure

Diagnostic steps

  1. Test sensor
  2. Inspect tone ring
  3. Check wiring
  4. Check bearing

Repair notes

Replace sensor. Check bearing and tone ring.

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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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