P0505 INFINITI - Idle Air Control Valve
- Improper idle speed
- Faulty IACV-AAC valve
- The IACV-AAC valve harness is open or shorted
- The IACV-AAC valve circuit poor electrical connection
- Faulty Engine Control Module (ECM)
P0505 Ecm IAC issue 2000 & 2001 I30 Part 2
P0505 Ecm IAC issue 2000 & 2001 I30 Part 3
P0505 Ecm IAC issue 2000 & 2001 I30 Part 4
P0505 Ecm IAC issue 2000 & 2001 I30 Part 5
P0505 Ecm IAC issue 2000 & 2001 I30 Part 6
User Submitted Video
When is the code detected?
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine hard to start
- Rough or erratic idle speed
P0505 INFINITI Description
One step of IACV-AAC valve movement causes the respective opening of the air by-pass passage. (i.e. when the step advances, the opening is enlarged.) The opening of the valve is varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects the actual engine speed and sends a signal to the ECM. The ECM then controls the step position of the IACV-AAC valve so that engine speed coincides with the target value memorized in ECM. The target engine speed is the lowest speed at which the engine can operate steadily. The optimum value stored in the ECM is determined by takig into consideration various engine conditions, such as during warm up, deceleration, and engine load (air conditioner, power steering and cooling fan operation).
P0505 INFINITI Information for specific Infiniti models
Need more help?
P0505 INFINITI CommentsHelp us improve itimaster.ru. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0505 Infiniti code? Have you replaced any parts?
Any information is appreciated. Thanks