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Home >> Kia >> 2014 >> Forte LX, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) - 1.8L >> DTC P0506: Idle Air Control System-RPM Lower than Expected >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

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
  • Engine Coolant Temperature (ECT) > 165°F
  • Time elapsed after (pedal value = 0% and vehicle speed = 0mph)
  • Does not activate at Auto stop mode (ISG system)
  • 11< Battery voltage <16
Threshold Value
  • Target RPM - Current RPM > 100rpm Engine speed too Low
Diagnostic Time
  • 17 sec.
Mil On Condition
  • 2 driving cycle
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