Go Back   Subaru Impreza Forum - WRX STI Rally Performance Tuning > Subaru Impreza Technical Area > Electrical (Including ICE)

Subaru Impreza Forum

Check Engine - Error 24
LinkBack Thread Tools Display Modes
Old 13 Jul 2010, 08:03 AM   #1 (permalink)
Fresh Scooby
Join Date: Jul 2010
Posts: 2
Check Engine - Error 24


I have a Subaru Impreza WRX -96 (Japan Import) and resonantly my check engine light turned on when I was driving (normal driving on the highway), when I pulled over the light turned off.

When I got home I checked the error code (thanks a lot for all good information on this forum to do this) and it is showing error code 24, which should be "Idle Control System Malfunction". But the engine is running smooth both idle and when driving.

It would be great if anyone could help me where to start searching for fault and finding the reason for the engine light to turn on. This have happened a few times now and it turns off as soon as I stop the car.

Kind regards,
Offline   Reply With Quote
Old 13 Jul 2010, 08:12 AM   #2 (permalink)
Veteran Scooby
rikimaru's Avatar
Join Date: Aug 2006
Location: Sussex
Posts: 3,335
Re: Check Engine - Error 24

Could be a problem with the Idle air control valve. Usually a problem with the IACV would cause a rough idle though. Gasket could be on it's way out and you could try giving it a good clean and see if that helps. Heres a link if you do give it a go;

Cleaning And Reattaching The IACV (Idle Air Control Valve) - NASIOC

If the car is running fine, you could try resetting the ECU and see if the fault code returns.
Come on you Spurs!

Last edited by rikimaru; 13 Jul 2010 at 08:19 AM.
Offline   Reply With Quote
Old 13 Jul 2010, 08:19 AM   #3 (permalink)
Fresh Scooby
Join Date: Jul 2010
Posts: 2
Re: Check Engine - Error 24

thank you rikimaru, I will check this after work today.
Offline   Reply With Quote
Old 13 Jul 2010, 08:43 AM   #4 (permalink)
Cool Scooby
Technical_Bob's Avatar
Join Date: Feb 2010
Location: In a cloud up in the sky, Like lucy
Posts: 291
Send a message via MSN to Technical_Bob
Re: Check Engine - Error 24

Hi the IACV may be on its way out, the ECU requires a voltage for it to recognise the signals 0.50v to 5v approx, if ur IACV is starting to fail ur ecu may be getting various voltages that it doesnt like while your driving, maybe this is ur hidden fault so to speak.
Subaru servicing, repairs and diagnostic fault finding help available.
Offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Oil advice for modifiers oilman Modifications - Tips and Tricks 16 14 Jul 2009 03:40 PM
Check Engine "Flash" - half second!?? jtanner Engine Bay 2 09 Sep 2008 11:54 AM
check engine light/ misses above 4000rpm darrellmac311 Technical General 8 04 Aug 2008 03:12 PM
16 important OIL questions and answers oilman Technical General 0 23 Jan 2008 03:31 PM
OUTSTANDING NEW ‘BOXER’ ENGINE FOR ’06 LEGACY RANGE skylight General Chat - Anything about Anything 3 03 Aug 2005 10:15 AM

All times are GMT. The time now is 10:57 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.