[P0505] The scan tool indicates Diagnostic Trouble Code (DTC) P0505: Idle control system malfunction.
NOTE: If DTC P1508 or P1509 is stored at the same time as DTC P0505, troubleshoot DTC P1508 or P1509 first, then recheck for DTC P0505.
IAC valve mechanical malfunction
Throttle body clogged port, improper adjustment
Intake manifold gasket leakage
Intake air hose loose leakage
ECT sensor incorrect output
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Saturday, January 19th, 2013 AT 9:29 PM