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Discussion Starter · #1 ·
Hello all again I recently posted about a modded zx3 I was looking at it appears egr system is in tact it has 2 codes and it says the 02 sensors aren’t ready. Could anyone tell me if this car has been tuned to ignore the 02 sensors based on this info? Sorry for being vague here’s the codes.
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Discussion Starter · #5 ·
If you haven't run through a few drive cycles it is normal for the system to be not ready.
Alright i also did see the pending code for the ob2 readiness but it wasn’t actually flagged it was pending. Wondering if owner cleared the computer I honestly have no clue. I’m a collision tech in training so I don’t deal with codes much lol.

He did say it had a bad upper 02 sensor. Lower was replaced more recently. Could those codes be caused by that? Sorry I didn’t include that originally I really appreciate all the replies.
 
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