2003 Honda Odyssey engine light on

KEVIN LUU

MEMBER
2003 HONDA ODYSSEY

Electrical problem
2003 Honda Odyssey 6 cyl Front Wheel Drive Automatic

2003 honda odyssey exl model, after parking in the gar for more 1 yr. Engine light on checking code said idle air control system code # p 0505 on idle gauge goes up & town between 1000-2000 rpm. Engine stalls. Thanks for your help.

3 Replies

KHLOW2008

MECHANIC
41,814 POSTS

Hi kevin luu,

When parked over long period of time with no activity, the IAC tends to seize and the valves would not move resulting in the code and engine surging.

You need to take the IAC out and try to see if you can get it moving by spraying some lubricants into the valve bearings and cleaning the valve. If it fails to response, you need to replace the IAC valve.

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Wednesday, November 26th, 2008 AT 7:14 AM

KEVIN LUU

MEMBER
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HI, I checked with dealer regarding the idle air control valve in my van they told me that there is not such name call idle air control valve in this vehicle. They said maybe rotary air control valve or rotary solenoid IAC system?
What is different between those 3 valves?
How do clean it? Thank you

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Friday, November 28th, 2008 AT 6:56 PM

KHLOW2008

MECHANIC
41,814 POSTS

Hi kevin luu,

It is those smart alec trying to be clever. Those are referring to the same item. Just that the systems operates differently. IAC is the general name commonly used so as not to be confusing.

Remove the air intake hose and spray some carb cleaner into the lower air passage inside the throttle body. Allow the carb cleaner to soak for a while and then try turning ignition switch on and off a few times to allow the valve to try to work itself free.

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Saturday, November 29th, 2008 AT 6:09 AM