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2000 AUDI A6
2.8L V6•AWD•AUTOMATIC•gas•ACK
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor501Torque2210Fluid9DTC900Battery1Maintenance0Recalls4
U0420moderate severityNetwork

Invalid Data Received from Ride Level Control Module

on 2000 Audi A6 2.8L V6 · AWD

What this code means

Data from the air suspension or ride height control module is corrupted.

Symptoms

  • Suspension warning light
  • Incorrect ride height
  • Vehicle listing to one side
  • Compressor cycling abnormally

Common causes

  • Height sensor calibration lost
  • CAN bus noise
  • Module sending incorrect data
  • Sensor wiring issue

Diagnostic steps

  1. Check ride height sensor readings
  2. Recalibrate suspension module
  3. Test CAN bus quality
  4. Inspect height sensor wiring
  5. Compare actual vs reported ride height

Repair notes

Recalibrate ride height sensors. Check sensor wiring at each corner.

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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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