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Old 03-24-2005, 01:06 PM   #1
phunkdup
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Member#: 60719
Join Date: Apr 2004
Location: North Bergen, NJ
Vehicle:
2004 WRX
Java Black Pearl

Question CEL but no code found?

So I'm running a cobb stage 1 v1.19 (stage 2 any day now) and I got a CEL last night. Hooked up the AP and it says no code found!

Anyone ever seen the CEL come on without a code? Think it's a problem with the reflash, or with the AP itself?
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Old 03-24-2005, 01:38 PM   #2
feiron
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Join Date: May 2004
Chapter/Region: VIC
Location: Westwood Plateau, Coq
Vehicle:
2005 WRB STI
[S600BY]

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you might be getting knocks... if the CEL lights up all the time, that means it's a "real" cel.... if it blinks thats a warning that your engine is knocking...
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Old 03-24-2005, 01:45 PM   #3
phunkdup
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Java Black Pearl

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It's steady, not flashing. Does the stock (or cobb) ecu flash for knock?
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Old 03-24-2005, 02:21 PM   #4
Uncle Scotty
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The AP does not read all codes...you need a OBDII scanner for that.
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Old 03-24-2005, 03:25 PM   #5
phunkdup
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P2004, got it pulled at autozone.
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Old 09-09-2006, 04:04 PM   #6
rayzz
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Crystal Gray Metallic

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i just got this same code after putting on an sti up, anyone have suggestions? (P2004 from autozone). It only comes on after a cold start where the car will run at 2k rpm for 10 seconds and then go down to normal, if I clear, it'll stay off until the next cold start.
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Old 09-10-2006, 12:13 AM   #7
Uncle Scotty
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Old 09-15-2006, 11:43 PM   #8
805WRX
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WR blue

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i have the same code, all you have to do is blimp the throttle right after you start the car cold. that will prevent the p2004 from coming on.
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