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

DTC P0506 DETECTING CONDITION TABLE

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
Enable Conditions	Coolant temperature >74°C (165.2°F) Closed throttle status Vehicle speed = 0 20sec. after engine start 10V < Battery voltage < 16V No relevant failure
Threshold Value	Engine speed-Target idle speed < -100rpm (Engine speed too low)
Diagnostic Time	16 seconds
MIL On Condition	2 Driving Cycles