Question about 1996 Nissan Maxima

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Not idling I have a 2000 maxima that does not idle ,there is a generic code p0505 - idle circuit malfuntion. I changed the tps and the problem is still there. thanks Mike

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You will need a Nissan diagnostic tool "CONSULT II" to correctly adjust the TPS you installed and to check the IDLE AIR VOLUME LEARN.

Posted on Jul 22, 2009

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Try checking your idle air control valve and see what happens

Posted on Jul 19, 2009

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Maxima's from around that time are prone to this nonsense.

Recently dealing with this in my 2001. Had to change out the IAC, although you might be able to clean it (it's connected to the bottom of the accelerator unit dealy.) If you need a new one, buy online, as it'll be around $150, whereas a mechanic will charge you about $400.

Likely, if that went sour, it probably burned out your ecm (you might have smelt burning electronics just before it happened, as I did) which you can replace at the dealer for $900+ or get repaired for around $200 (I used circuit board medics).

Posted on Jul 12, 2013

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Just replaced tps but dash light is still on and idle is very rough.

The generic basics for a rough idle on any vehicle is to check for a leak of some kind, fuel--egr--vacuum leak, something of that nature. I'm not sure why you replaced the tps, unless you got a code of some kind? The code doesn't tell you what to replace. With any electrical sensor, I'd want to check wiring circuits, first, before replacing.
Clean the throttle body and idle air system, see if it helps. Your saying it runs good, off idle?

Nov 15, 2016 | Cars & Trucks

1 Answer

How to fix code P0505 code on 2000 kia sportage?

P0505: Idle Air Control Valve System fault, Code P0505
-Vacuum leak
-Dirty throttle body
-IAC motor defective
-Poor electrical connection to the IAC valve, hope this helps and good-day !

Mar 29, 2012 | 2000 Kia Sportage

1 Answer

Nissian path finder 2000 code p0505

That is idle air control (IAC) system malfunction,it's causes may include:
IAC motor connector is damaged (check connector and pins for damage, and moisture);
One or more IAC circuits open or shorted to ground;
One or more IAC circuits are shorted to voltage;
IAC has failed; or PCM has failed
You can clearing the fault codes. Then unplug the IAC and start the engine. If the P0505 code doesn't reset, replace the IAC. It is internally shorting one of the IAC circuits. If the code DOES return after unplugging the IAC and starting the engine, then you know it isn't the IAC motor. Visually check the wiring harness all the way back to the PCM. You may need to visually inspect the harness by removing all the insulation off the wires. It is possible that the wires could be shorting to eachother or to other wires in the harness.

Hope this helpful.

Plus: DTC table click here.

Nov 10, 2011 | 2000 Nissan Maxima

1 Answer

P0505 code

P0505 Idle Air Control System Malfunction That points to either an unplugged or bad Idle Air Control Valve (IACV).

Sep 02, 2011 | 2001 Nissan Maxima

3 Answers

Diagnostic codes p1505 p1507 ran stalled wont run turns over fine

sorry but their are no diadnostic codes with this number in the manufacturers codes i have
P0505....Idle Control System
P0507....Idle Control System RPM Higher Than Expected
but i have found these generic codes for you if they help

Aug 10, 2010 | 2003 Hyundai Tiburon

1 Answer

The car will not hold rpm.

If you check engine light is on the computer has a code to show what sensor is having issues or perhaps is broken.

If you can keep the car running by staying on the gas pedal its most likely a broken throttle position sensor or a broken idle air control.

Throttle position sensors *(TPS for short) are high wear since they are mechanically changing position everytime you move the gas pedal. The idle air control is less likely but still a possiblity.

Find an autoparts store that will read your on board diagnostic code *(called OBD 2 for short) for free and see if the code is something that just requires a new part.

TPS for a Nissan Maxima is 130-150 bucks! So doing this cheap is not going to be easy! The idle air control is over 200 bucks! Yipes!

Good luck with your repair and be careful!

Dec 11, 2009 | 2000 Nissan Maxima

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