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What does code P0505 mean - 1998 Mitsubishi Galant

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This code seems to be "Idle speed control (ISC) system malfunction". Possible causes are wiring,ISC actuator/IAC valve,throttle motor,throttle valve tight or sticking, ECM. Hope this info is useful.

Posted on Nov 08, 2010

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Posted on Jan 02, 2017

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SOURCE: Engine Code P0505

After the IAC is replaced it is not enough to clear the code you must also reset the IAC learned adaptive. To do this you will need a higher end scanner like snap-on or such.

Posted on Jun 17, 2010

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I have a 98 Mazda 626, error codes p0420 and p0505, anything that could cause both?


P0505 - Idle Control System Malfunction P0420 - Catalyst System Efficiency Below Threshold (Bank 1)

Apr 22, 2014 | 1999 Mazda 626

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Alfa 156 2lt JTS fault codes P0120 & P0505 are they an easy fix?


p0120 means you have a throtle position sensor problem could get expesive if throtle body is bad p0505 is same problem it means throtle idle controle valve problem hmm short bad ecm or bad throtle body hope this helps

Nov 27, 2012 | Cars & Trucks

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1999 dodge durango 5.2l code po505


P0505 - Idle Control System Malfunctionxicon.jpghttp://engine-codes.com/p0505.htmlForum CodePossible causes- IACV-AAC valve harness is open or shorted
- IACV-AAC valve poor electrical connection
- Faulty IACV-AAC valve

Read more: http://engine-codes.com/p0505.html#ixzz1zVJIt34L

Jul 02, 2012 | 1999 Dodge Durango

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

2 Answers

Can u help me find what the code p0505 is for a 1997 plymouth voyager please?


This is an obd2 code trouble table, it can help you understand the meaning of code.
And for p0505, the possible solutions:
This should be a fairly straightforward diagnosis. Start by clearing the fault codes. Then unplug the IAC and start the engine (This may cause other IAC codes to set. Just ignore them for now). 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.
If there are no wiring problems, and the code keeps returning with the IAC unplugged, you can check the PCM by removing the IAC wires from the PCM connector (or clipping the wires in a location where they can be repaired easily) and then start the engine (If you're not sure, don't do it. Take it to a qualified professional). Now if the code doesn't reset there is a problem with the wiring. Check for continuity on all the IAC wires. Any resistance points to a problem. Check for voltage on any(At this point there shouldn't be any voltages on the wires because they're clipped at one end and unplugged at the IAC). Repair as necessary. But if the P0505 code DOES reset after removing the IAC wires from the PCM connector(or clipping them), replace the PCM, there's a problem internally on the IAC control circuit.
I know this tool can hekp you clear the code. hope help.

Jul 13, 2011 | Plymouth Voyager Cars & Trucks

1 Answer

Engine Code P0505


After the IAC is replaced it is not enough to clear the code you must also reset the IAC learned adaptive. To do this you will need a higher end scanner like snap-on or such.

Apr 18, 2009 | Dodge Durango Cars & Trucks

1 Answer

Have trouble code P0505


Ok...!!! P0505.. Idle Air Control sistem.. first check the harnes is well conected have somebody to helpyou run the engine this device is located in the air housing in the middle move this side to side if you see the engine ligth blinking thats a conector problem otherwise replace this IAC. disconect the ground from the battery so the new item be reconice from the computer

Feb 02, 2009 | 2000 Mitsubishi Eclipse

2 Answers

1996 dodge ram 1500 p0505 code.whats that mean?


Hi there P0505 code is an idle control system malfunction.

Jan 24, 2009 | 1996 Dodge Ram

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