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Home >> Nissan-Datsun >> 2014 >> Sentra S, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0507: ISC System >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P0507 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause
P0507 ISC SYSTEM
(Idle air control system RPM higher than expected)
The idle speed is more than the target idle speed by 200 rpm or more.
  • Electric throttle control actuator
  • Intake air leak
  • PCV system