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My 2002 Odyssey has an erratic idle and a P0505 trouble code

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HI THIS IS Common cause of surging idle and the code P0505 is a sticking Idle Air Control (IAC) valve. Refer to Honda TSB #04-007 for updated part number. Hope this helps replace your IAC.

Posted on Sep 30, 2009


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What is code for P0505 2002 BMW 330ci

Do you understand what exactly sets a P0505? It is not an electrical code, it is purely performance. The code sets when it can't get the idle speed within +200 / -100 of the target for more than x seconds, and it takes a failure in two successive drive cycles to set the code. ANYTHING that can cause an incorrect idle speed can set this code. Vacuum leak, dirty IAC, etc.

Jan 27, 2015 | BMW Cars & Trucks

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2002 honda civic code p0505

Error Code: P0505
Fault Location:
Idle Speed Control (ISC) System - Malfunction
Possible Cause:
-Wiring harness.
-Idle speed control (ISC) actuator/Idle air control valve (IAC) valve.
-Throttle valve tight/sticking.
-Engine control module (ECM).

May 13, 2013 | Honda Civic Cars & Trucks

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Ok I have a 2002 Honda Odyssey and it's was stopping during braking and turning. But I traced it down to the power steering sensor. What else should I check for cause the check engine light came back on...

Not sure I know the main concern here

What was the steering issues your working on?

The PO505 is a Generic Code -for Idle Control
System Malfunction

Mar 03, 2011 | 2002 Honda Odyssey

1 Answer

The TCS and check engine light both came on my 2002 honda odyssey? Is it the O2 Sensor? Or can I just reset the lights? The engine also idles very low when the vehicle is stopped at a traffic light. No...

Don't reset the lights without getting the DTC's or diagnostic trouble codes from the car's computer. An autoparts store can hook up a diagnostic code reader for free. With the codes in hand, you can start to diagnose your issue. You can then reset the lights to see if the codes return.

Jan 16, 2011 | 2002 Honda Odyssey

1 Answer

Iac location on my 1999 honda odyssey?after engine warms up-idle runs up and down from 900-2100 rpms.problem occurred instantly.scanned engine vaccum leaks.

The IAC is located under the throttle body.

k42282_17.jpg But check the Power Steering Pressure sensor wire first. The wires are known to break at the sensor harness and cause idle problem. if it's broken then repair it first. Look from under car view.


Dec 16, 2010 | 2002 Honda Odyssey

3 Answers

When engine gets hot, idle is up and down with the engine light on. OBD code gives a P0505 code.

per this address "" p0505 is a "IAC (Idle Air Control) System Malfunction" it gives some good suggestions to look at to find a solution for your problem.

Dec 14, 2010 | 2002 Honda Odyssey

2 Answers

When in park honda odyssey revs up and down between 1000 and 2000 RPMs

is the check engine light on also? it sounds like the idle air control valve is bad. this controls the idle of the vehicle. when it is stuck open it causes too much air into the engine and causes it to rev. when it gets to a set rpm, the pcm cuts fuel. then it turns the fuel back on, then the engine revs, then it cuts fuel........code p0505 will prob be set

Nov 26, 2009 | 2000 Honda Odyssey

2 Answers

Engine code P0505 for 2002 honda odyssey

p0505 is directly related to the idle air control valve (sometimes called the rotary valve) i cant count how many of these i have replaced on hondas. It is located directly under the throttle body so it can be difficult to replace. I would recommend you having a professional replace this due to the difficulty of the valve removal

Dec 08, 2008 | 2002 Honda Odyssey

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