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  1. R

    O2 Sensor Voltage

    I've been struggling with various CEL codes since I bought my 2004 Xterra 3.3l. Lately they have been converter/O2 codes. I replaced the passenger side (bank 1) sensors up and downstream. I bought the cheap Kwiksen ones off of Amazon. The upstream sensor seemed to still have problems so I...
  2. R

    P0420

    I've owned this 2004 Xterra 3.3 since September. And I've spent the majority of time working on it fixing problems. I thought I was buying something that would "run forever". Seems it will only "run forever" as long as you are fixing problems on it every other weekend!!! The last of my problems...
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