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2005-2011 AUDI A6
4.2L V8•AWD•AUTOMATIC•gas•BAT
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor504Torque2218Fluid10DTC1868Battery1Maintenance0Recalls5
P0595low severityPowertrain

Cruise Control Servo Control Circuit Low

on 2005-2011 Audi A6 4.2L V8 · AWD

What this code means

The cruise control servo control circuit voltage is lower than expected. A short to ground or internal servo fault may be pulling the signal down.

Symptoms

  • Cruise control not working
  • Unable to set desired speed
  • Cruise warning indicator on

Common causes

  • Short to ground in servo circuit
  • Faulty cruise control servo
  • Damaged wiring harness
  • PCM output fault

Diagnostic steps

  1. Read cruise control fault codes
  2. Check servo circuit for short to ground
  3. Inspect harness for chafing
  4. Measure servo control voltage during operation
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