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Old 08-15-2016, 08:28 AM   #1
BFARNZ91
Scooby Newbie
 
Member#: 349857
Join Date: Mar 2013
Default 2004 wrx

Why does the cel light in an 04 wrx come on when or after it rains
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Old 08-15-2016, 08:48 AM   #2
Loyale93
Newbie Moderator
Moderator
 
Member#: 91347
Join Date: Jul 2005
Chapter/Region: NESIC
Location: Shermer, Illinois
Vehicle:
'13 XV Crosstrek,12
1050 Triumph Speed Triple

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Because.

What's the actual code, you dingus? Tell us that and maybe we can help.
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Old 08-15-2016, 09:47 AM   #3
RoadTrippa
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Member#: 433719
Join Date: Nov 2015
Vehicle:
2005 WRX Wagon
Blue

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My guess based on little to no information is your TGV valve is sticking every so often depending on atmospheric conditions.

http://forums.nasioc.com/forums/show....php?t=1663677

2nd random guess you still have the catalytic converter in your up-pipe and it is slowly disintegrating which will nuke your turbo / engine if left untreated. (replace up-pipe with non catted up-pipe)

Let me know if either of these random guesses pan out!
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Old 08-15-2016, 10:21 AM   #4
monkeyposeur
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Member#: 333468
Join Date: Sep 2012
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
1993 SS
03 WRB GD 205/22T 20G-XT

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My random guess: CEL PO103 Mass airflow sensor high input. I would get this code when I had a short ram intake occasionally after it rained. It was odd though since my air filter did not appear to be wet. I went back to the stock intake for other reasons and havent had the code since. My MAF was brand new as well. I would reset the ecu and be on my way. The cel would put me in limp mode.

Go to any auto parts store and get the code pulled for free. How is anyone supposed to help if they don't know the code?


Do you have a cold air intake or any intake mods?
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Old 08-15-2016, 12:10 PM   #5
Samurai Jack
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Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

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Quote:
Originally Posted by monkeyposeur View Post
How is anyone supposed to help if they don't know the code?
Because? Maybe they think we can read their mind?
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