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Discussion Starter · #1 ·
So I have no cat, I bought a 42dd o2 sensor spacer and installed it, and I ended up getting some codes (standard obd, I dont have a vag-com)
p0141 and p0138
I figured my post-cat o2 sensor was dead so I replaced it and the car was fine for almost a week and the CEL came back on today...same codes
What could it be? Maybe I need to replace the pre-cat o2 sensor? Any ideas?
I really dont want to leave my CEL on since I want to be able to know if something else comes up.
I have adjusted the o2 sensor spacer a little bit but judging from the codes, it doesnt seem like the spacer needs to be adjusted :/
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