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Home >> Kia >> 2011 >> Optima LX, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) - 2.4L >> DTC P0506: Idle Air Control System-RPM Lower Than Expected >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSES

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring deviation between target idle speed and actual engine speed
  1. Restriction in intake or exhaust system
  2. Contact resistance in connectors
  3. Faulty ETC
Enable Conditions
  • Coolant temp. >73°C (163°F)
  • Engine idle status (closed throttle valve & vehicle speed=0)
  • Idle speed controller active (idle status)
  • 11< Battery voltage <16
  • After engine start >20 Seconds
  • No relevant failure
Threshold Value
  • Nominal Idle Speed - Engine Speed < 100 RPM
Diagnostic Time
  • 21 Seconds
Mil On Condition
  • -
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