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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 108 (Engine Control System Diagnosis - 1.6L (2 Of 3) - Optima (Except HEV)) >> DTC P0507: Idle Air Control System-RPM Higher Than Expected >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
Case 1 DTC Strategy
  • Engine speed is above the target while ISC torque is around the minimum
  1. Vacuum leak
  2. Damaged PCSV
  3. ETC
  4. PCM
  5. Intake air leak after throttle body
Enable Conditions
  • Vehicle speed 0km (0mph)
  • ECT greater than 60°C (140°F)
  • Intake air temperature greater than -10.5°C (13.1°F)
  • Accel. Pedal 0%
  • BARO greater than 74.5kpa (0.74bar/10.80psi)
Threshold Value
  • Difference of Actual engine speed and Desired engine speed greater than 200RPM
  • Difference of Actual Idle torque and Min. Idle torque greater than 20Nm
Diagnostic Time
  • 8s
Case 2 DTC Strategy
  • Fuel cut-off during stand-still and idle condition
Enable Conditions
  • Vehicle speed 0km (0mph)
  • ECT greater than 60°C (140°F)
  • Intake air temperature greater than -10.5°C (13.1°F)
  • Accel. Pedal 0%
  • BARO greater than 74.5kpa (0.74bar/10.80psi)
Threshold Value
  • Fuel cut-off equal to or greater than 3 times
Diagnostic Time
  • 15s
MIL ON Condition
  • 3 driving cycles