08 wrx stage 2. throwing codes - Subaru WRX Forum
 
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#1 Old 11-22-2013, 04:02 PM
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08 wrx stage 2. throwing codes

hey guys- I have a 08 WRX. I have cobb intake, Turbo XS TB exhaust and cobb V3

Im on stage 2 91+

And I have been getting a couple codes, and wondering what would be causing them, If I delete the codes they go away, but they eventually come back a couple days later

codes that I have been getting

- P0420 catalyst system efficiency below threshold (bank 1)
- P2096 post catalyst fuel trim system too lean bank 1
- P0137 o2 sensor circuit low voltage (bank sensor 2)

I've had the first 2 codes many times and the last code just once.

I sent my datalog to cobb, and they said everything looked good.

Do i just delete the codes, or is there something I should fix?
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#2 Old 11-22-2013, 04:41 PM
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Does the TB have cats? If not and there is a spacer on there (the 02 sensor mechanical fix for being catless) it could be spaced out too far, or your 02 sensor might just be bad.
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#3 Old 11-23-2013, 01:26 PM
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there is no spacer on there.
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#4 Old 11-23-2013, 01:28 PM
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Catted DP and CBE?


Sent from AutoGuide.com App

Brandon - 13' SWP WRX Sedan
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#5 Old 11-23-2013, 02:50 PM
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yes it is^
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#6 Old 11-23-2013, 03:08 PM
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Your sensor is probably bad.
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