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Old 07-30-2014, 06:30 PM   #1
ltl vpr
Scooby Newbie
 
Member#: 244191
Join Date: Apr 2010
Chapter/Region: Tri-State
Vehicle:
2005 Evo
Black

Default 2010 wrx rear o2 wiring help!!!???

I posted this in drivetrain section. No help there. This is probably more appropriate here anyway. Hopefully I can get some help.

Long story short the plug (on the car) for the rear o2 is destroyed. Obviously now have a cel from it. So I'd like to re wire it. I know the proper way is to prob get a whole new tranny harness. But for now I want to use sealed male/female connectors. But the plug is so bad I can't tell which wires go where. Can anybody take a look on their car and let me know what color wires go from the plug to the o2 or does anybody have a wire diagram for this?
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Old 07-30-2014, 06:49 PM   #2
ltl vpr
Scooby Newbie
 
Member#: 244191
Join Date: Apr 2010
Chapter/Region: Tri-State
Vehicle:
2005 Evo
Black

Default

Ok so finally had a chance to mess with this. But haven't had the chance to drive the car. So would REALLY like if somebody can confirm this for me. I found a diagram for the sensor but not for the car. The sensor goes
Black-heater
Black-heater
White-ground
Blue-signal

So I did a bit of guessing after searching for hours and coming up with nothing. I currently have it hooked up like so.

Sensor side/ car side
Blue-blue
Black/yellow red
Black/white
White/white black

I cleared the rear o2 code and fired it up. Let it idle up to temp and no cel yet. Again haven't had a chance to drive the car. Then I started it up a second time and cel came right on with a p0037 rear o2 heater code. So I guess I still don't have it right. Can somebody please help?? Thanks.


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Old 07-30-2014, 07:49 PM   #3
Mulder
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Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

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