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12-12-2013, 01:19 PM
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Team LLT
Drives: 2012 WRX (Stage 2) Join Date: Dec 2012
Location: Newton, MA
Posts: 523
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P0134 - Is this an issue?
I just went to clear my codes out before inspection and found that I had popped P0134 - Heated Oxygen O2 Sensor Inefficient Circuit. I've been running Catless LT headers with O2 extensions since the summer. I usually get the Cat system low efficiency code every thousand miles or so, but this is the first time I got this one. Is this something I have to do anything about or a nonissue?
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 Mods: Bolt On's and Such, Some Cosmetic Stuff Too |
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12-16-2013, 06:36 PM
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Sounds like the front O2 sensor, or it's wiring, has gone bad.
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745RWHP/634RWTQ on 93 @ 10psi
806/676 on E85 @ 10psi  COTW 9/8/14 |
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