CEL but no code found?

phunkdup · 03-24-2005, 01:06 PM

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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feiron · 03-24-2005, 01:38 PM

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...

phunkdup · 03-24-2005, 01:45 PM

It's steady, not flashing. Does the stock (or cobb) ecu flash for knock?

Uncle Scotty · 03-24-2005, 02:21 PM

The AP does not read all codes...you need a OBDII scanner for that.

phunkdup · 03-24-2005, 03:25 PM

P2004, got it pulled at autozone.

rayzz · 09-09-2006, 04:04 PM

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.

Uncle Scotty · 09-10-2006, 12:13 AM

805WRX · 09-15-2006, 11:43 PM

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.

03-24-2005, 01:06 PM	#1
phunkdup Scooby Newbie Member#: 60719 Join Date: Apr 2004 Location: North Bergen, NJ Vehicle: 2004 WRX Java Black Pearl	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? * Registered users of the site do not see these ads.

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03-24-2005, 01:38 PM	#2
feiron Scooby Specialist Member#: 62327 Join Date: May 2004 Chapter/Region: VIC Location: Westwood Plateau, Coq Vehicle: 2005 WRB STI [S600BY]	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...

03-24-2005, 01:45 PM	#3
phunkdup Scooby Newbie Member#: 60719 Join Date: Apr 2004 Location: North Bergen, NJ Vehicle: 2004 WRX Java Black Pearl	It's steady, not flashing. Does the stock (or cobb) ecu flash for knock?

03-24-2005, 02:21 PM	#4
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	The AP does not read all codes...you need a OBDII scanner for that.

03-24-2005, 03:25 PM	#5
phunkdup Scooby Newbie Member#: 60719 Join Date: Apr 2004 Location: North Bergen, NJ Vehicle: 2004 WRX Java Black Pearl	P2004, got it pulled at autozone.

09-09-2006, 04:04 PM	#6
rayzz Scooby Newbie Member#: 95543 Join Date: Sep 2005 Chapter/Region: SWIC Location: AZ Vehicle: 2005 WRX Wagon Crystal Gray Metallic	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.

09-10-2006, 12:13 AM	#7
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle

09-15-2006, 11:43 PM	#8
805WRX Scooby Newbie Member#: 22920 Join Date: Aug 2002 Location: oxnard ca 805 Vehicle: 2005 impreza WRX STi WR blue	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.