CEL is ON, Got Code, dunno what to do now....

ScubyMedic · 12-06-2005, 12:25 AM

Ok all, I need help finding out what the heck is this....

My 2002 2.5RS Sedan is Pulling this:
P0037

I do have a Aftermarket Catback on the car, and a Cold Air Intake...
I bought the car salvaged, and have been fixing it. everything is almost done, and i stuck a 05 STi front end on it. Im not sure what kind of Air intake i have, or Catback, but i do know that the catback is completely welded except where it hooks up to the cat.

Please let me know if you guys can help me,

Thanks
Drew

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Uncle Scotty · 12-06-2005, 12:43 AM

...rear o2 heater circuit malf.....

ScubyMedic · 12-06-2005, 02:02 AM

lol, im kinda slow, so that means i need to buy 02 sensor for the rear?
Please clarify this for me,
Thanks
Andrew

Mulder · 12-06-2005, 07:15 AM

Check over the wiring to the rear 02, it might have been damaged in an accident or when the car was towed or dragged. Could also be the sensor itself but you should look for other causes before spending the $ for a new sensor.

ScubyMedic · 12-06-2005, 10:22 AM

Well the thing is, the car was hit in the front. Also im not exactly sure where the sensor or wiring would be. ive just gotten into doing body mechanics so im not really sure where everything is. Do you, or anyone, think you guys can post a pick of where it would be....?
Thanks
Andrew

JimBlake · 12-06-2005, 11:19 AM

What's the proper resistance for the sensor heater (Mulder?) Medic; got a multi-meter?

The 2 same-color (black?) wires on the sensor are the heater. Measure resistance between them. On Hondas it should be 15 to 40 ohms, I don't know about Subies, maybe the same? Neither of those wires should have any continuity to ground (to the metal body of the sensor). If that's not OK, get a new sensor. Otherwise start looking for screwed-up wiring for that circuit.

ScubyMedic · 12-06-2005, 10:04 PM

lol, im not too sure, but i think the guy who put the Catback on the car before me, took out the sensor

.... Cuz i dont see anything....

Maybe im just blind, or stupified

, someone help me out here, post a pick of yours.....

specialev · 12-07-2005, 12:15 AM

Here's a pic of my ERZ with the sensor sticking out of it. I don't have it in the car anymore, and it doesn't matter because my AP makes up for it's absence. So, it sounds like you need to either buy an AP or some other form of EM, or look into the appropriate mods to make up for a missing rear O2 sensor. I would suggest the unabombers manifesto as a starting point.

ScubyMedic · 12-10-2005, 10:14 PM

Hey all, i need some more advice. Someone i know has a 2005 2.5rs thats smacked up. He only has 10,000 miles on the car, and hes getting rid of it. He did tell me he had the 02 sensor that i need. But the only thing is mines a 2002, and im unsure if it is the same. Can someone let me know if the 02 and 05 rear 02 sensors are the same? Thanks
Andrew

Uncle Scotty · 12-10-2005, 10:43 PM

....didya get my PM????......and did it help????

...and look at the plugs on the sensors....match =

specialev · 12-10-2005, 11:30 PM

In response to your PM to me.

Check the numbers on the one your friend has vs. the one you have, if they match then they are the same part. If the plugs are different and the numbers match, it is the same sensor but you will have to solder your plug onto the new sensor.

12-06-2005, 12:25 AM	#1
ScubyMedic Scooby Specialist Member#: 98203 Join Date: Oct 2005 Chapter/Region: Tri-State Location: Peekskill, NY 10566 Vehicle: 2005 Spaceship/03WRX both WRB	CEL is ON, Got Code, dunno what to do now.... Ok all, I need help finding out what the heck is this.... My 2002 2.5RS Sedan is Pulling this: P0037 I do have a Aftermarket Catback on the car, and a Cold Air Intake... I bought the car salvaged, and have been fixing it. everything is almost done, and i stuck a 05 STi front end on it. Im not sure what kind of Air intake i have, or Catback, but i do know that the catback is completely welded except where it hooks up to the cat. Please let me know if you guys can help me, Thanks Drew * Registered users of the site do not see these ads.

12-06-2005, 10:22 AM	#5
ScubyMedic Scooby Specialist Member#: 98203 Join Date: Oct 2005 Chapter/Region: Tri-State Location: Peekskill, NY 10566 Vehicle: 2005 Spaceship/03WRX both WRB	hmm.... Well the thing is, the car was hit in the front. Also im not exactly sure where the sensor or wiring would be. ive just gotten into doing body mechanics so im not really sure where everything is. Do you, or anyone, think you guys can post a pick of where it would be....? Thanks Andrew

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12-06-2005, 12:43 AM	#2
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	...rear o2 heater circuit malf.....

12-06-2005, 02:02 AM	#3
ScubyMedic Scooby Specialist Member#: 98203 Join Date: Oct 2005 Chapter/Region: Tri-State Location: Peekskill, NY 10566 Vehicle: 2005 Spaceship/03WRX both WRB	lol, im kinda slow, so that means i need to buy 02 sensor for the rear? Please clarify this for me, Thanks Andrew

12-06-2005, 07:15 AM	#4
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	Check over the wiring to the rear 02, it might have been damaged in an accident or when the car was towed or dragged. Could also be the sensor itself but you should look for other causes before spending the $ for a new sensor.

12-06-2005, 11:19 AM	#6
JimBlake Scooby Newbie Member#: 82247 Join Date: Mar 2005 Location: NE Ohio Vehicle: 2005 Saab 9.2x Aero satin grey	What's the proper resistance for the sensor heater (Mulder?) Medic; got a multi-meter? The 2 same-color (black?) wires on the sensor are the heater. Measure resistance between them. On Hondas it should be 15 to 40 ohms, I don't know about Subies, maybe the same? Neither of those wires should have any continuity to ground (to the metal body of the sensor). If that's not OK, get a new sensor. Otherwise start looking for screwed-up wiring for that circuit.

12-06-2005, 10:04 PM	#7
ScubyMedic Scooby Specialist Member#: 98203 Join Date: Oct 2005 Chapter/Region: Tri-State Location: Peekskill, NY 10566 Vehicle: 2005 Spaceship/03WRX both WRB	lol, im not too sure, but i think the guy who put the Catback on the car before me, took out the sensor .... Cuz i dont see anything.... Maybe im just blind, or stupified , someone help me out here, post a pick of yours.....

12-07-2005, 12:15 AM	#8
specialev Scooby Specialist Member#: 90156 Join Date: Jun 2005 Chapter/Region: NWIC Location: Auburn, Wa Vehicle: 1986 Syncro Vanaru 07 SV650	Here's a pic of my ERZ with the sensor sticking out of it. I don't have it in the car anymore, and it doesn't matter because my AP makes up for it's absence. So, it sounds like you need to either buy an AP or some other form of EM, or look into the appropriate mods to make up for a missing rear O2 sensor. I would suggest the unabombers manifesto as a starting point.

12-10-2005, 10:14 PM	#9
ScubyMedic Scooby Specialist Member#: 98203 Join Date: Oct 2005 Chapter/Region: Tri-State Location: Peekskill, NY 10566 Vehicle: 2005 Spaceship/03WRX both WRB	Hey all, i need some more advice. Someone i know has a 2005 2.5rs thats smacked up. He only has 10,000 miles on the car, and hes getting rid of it. He did tell me he had the 02 sensor that i need. But the only thing is mines a 2002, and im unsure if it is the same. Can someone let me know if the 02 and 05 rear 02 sensors are the same? Thanks Andrew

12-10-2005, 10:43 PM	#10
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	....didya get my PM????......and did it help???? ...and look at the plugs on the sensors....match =

12-10-2005, 11:30 PM	#11
specialev Scooby Specialist Member#: 90156 Join Date: Jun 2005 Chapter/Region: NWIC Location: Auburn, Wa Vehicle: 1986 Syncro Vanaru 07 SV650	In response to your PM to me. Check the numbers on the one your friend has vs. the one you have, if they match then they are the same part. If the plugs are different and the numbers match, it is the same sensor but you will have to solder your plug onto the new sensor.