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

DTC DETECTING CONDITION AND POSSIBLE CAUSE

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 ICA valve
Enable Conditions	Coolant temperature > 73°C (163.4°F) Throttle angle: closed Vehicle speed = 0 10 seconds after engine start. 10V < Battery voltage < 16 No relevant failure
Threshold Value	Engine speed-Target idle speed < -100 RPM (Engine speed too low)
Diagnostic Time	16 seconds
MIL On Condition	2 Driving Cycles