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Audi, A4 Common Issues

  1. Oil Leaks
  2. Engine Tick or Knock
  3. Water Pump Failure
  4. Coolant Leaks
  5. Brake Master Cylinder Issues
  6. Rear Main Seal Failure
  7. PCV Valve Problems
  8. Transmission Slipping or Leaking
  9. Head Gasket Failure
  10. EGR Valve Clogging or Faulty Sensor
  11. Fuel System Issues (injector, fuel pump, etc.)
  12. Air Conditioning System Malfunction
  13. Electrical System Glitches (faulty sensors, computers, etc.)
  14. ABS System Problems (sensors, pumps, etc.)
  15. Rear Axle or Bearing Wear
  16. Transmission Mount Failure
  17. Engine Oil Pressure Sensor Fault
  18. Spark Plug Wire Issues
  19. Intake Manifold Vacuum Leaks
  20. Alternator Belt Tensioner Malfunction
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