Possible causes – Improper idle speed– The IACV-AAC valve harness is open or shorted– The IACV-AAC valve circuit poor electrical connection– Faulty IACV-AAC valve– Faulty Engine Control Module (ECM) Tech description There is a factory service bulletin for the following Nissan models: 2000 Nissan Maxima2001 Nissan Pathfinder2000 Nissan SentraNissan Factory Service Bulletin OBDII Code P0505…