DTC P0506 Idle Air Control System-Rpm Lower Than Expected: DTC Detecting Condition

DTC DETECTION CONDITION REFERENCE CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Monitor deviation between target idle speed and actual engine speed	Restriction in intake or exhaust system. Carbonustment of the accelerator cable. Contact resistance in connectors. Faulty ISCA valve.
Enable Conditions	Coolant temperature > 74°C(165°F) Throttle angle: closed Vehicle speed = 0 20seconds after engine start. 10V < Battery voltage < 16 No relevant failure
Threshold Value	Target idle speed-Engine speed < -100rpm (Engine speed too low)
Diagnostic Time	16 seconds.
Mil On Condition	2 Driving Cycles