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2013 AUDI A6

3.0L Supercharged V6•AWD•AUTOMATIC•gas•supercharged
6 active safety recalls on this vehicle — view recalls
Repairs0Labor991Torque6374Fluid15DTC1810Battery0Maintenance0Recalls6
P0506moderate severityPowertrain

Idle Air Control System RPM Lower Than Expected

on 2013 Audi A6 3.0L Supercharged V6 · AWD

What this code means

The idle speed is consistently below the target RPM.

Symptoms

  • Low idle speed
  • Stalling
  • Rough idle

Common causes

  • Carbon buildup in throttle body
  • Vacuum leak
  • Faulty IAC valve
  • Low fuel pressure
  • EGR valve stuck open

Diagnostic steps

  1. Clean throttle body
  2. Check for vacuum leaks
  3. Test IAC valve
  4. Test fuel pressure
  5. Check EGR valve

Repair notes

Clean throttle body and IAC. Check for vacuum leaks.

Other Powertrain codes on this vehicle

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