DTC P0507 Idle Air Control System-Rpm Higher Than Expected: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSE

Item	Detecting Condition	Possible Cause
DTC Strategy	Compare engine speed and nominal idle speed in idle state	A stuck or binding throttle plate Misadjustment of the accelerator cable Contact resistance in connectors Faulty ISA valve
Enable Conditions	Vehicle speed = 0 Coolant temperature > 75°C (167°F) Engine load < 840 mg/rev. Throttle angle: closed Minimum time after start: 10sec. Canister purge control < 50%
Threshold value	Engine speed > (target RPM + 200)
Diagnostic Time	18.5 sec.
MIL On Condition	-