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2000 AUDI A6
2.7L Turbo V6•AWD•AUTOMATIC•gas•APB•turbo
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor504Torque2222Fluid9DTC1653Battery1Maintenance0Recalls4
P0594low severityPowertrain

Cruise Control Servo Control Circuit/Open

on 2000 Audi A6 2.7L Turbo V6 · AWD

What this code means

The PCM detected an open in the cruise control servo control circuit. The servo that adjusts throttle for cruise cannot be controlled properly.

Symptoms

  • Cruise control does not maintain speed
  • Cruise control fails to engage
  • Speed drifts when cruise set

Common causes

  • Open in servo control wiring
  • Faulty cruise control servo
  • Poor servo connector contact
  • PCM driver circuit fault

Diagnostic steps

  1. Scan for cruise servo codes
  2. Check servo control circuit continuity
  3. Inspect servo connector and pins
  4. Test servo actuation with scan tool
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