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Home >> Porsche >> 2003 >> 911 Turbo, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lights, Lamps, Switches Diagnosis - 911 Turbo (996) >> Fault code 1 >> Engine path, left >> Possible cause of fault

Possible cause of fault

  1. Short circuit to ground or open circuit in the circuit between control module and servomotor for HBA, left
  2. Servomotor for HBA, right, is faulty
  3. The control module is faulty
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