LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2015 >> Soul Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) - 1.6L >> DTC P0506: Idle Air Control System-RPM Lower than Expected >> DTC Information >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Engine speed is below the target while ISC torque is around the maximum
  1. Intake system restriction
  2. Vacuum leaks
  3. Exhaust restriction
  4. Engine mechanical concern
  5. Sludged throttle body
  6. ETC
  7. PCM
Enable Conditions
  • Vehicle speed = 0 mph
  • ECT greater than 60°C (140 °F)
  • Intake air temperature greater than -10.5°C (13.1 °F)
  • Accel. Pedal = 0%
  • BARO greater than 74.5 kpa (0.74 bar/10.80 psi)
Threshold Value
  • Difference of Desired engine speed and Actual engine speed greater than 100 rpm
  • Deference of Max. idle torque and Actual idle torque less than 10 Nm
Diagnostic Time
  • 8 sec.
Mil On Condition
  • 2 driving cycles