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Posted on Mar 16, 2009
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Oxygen sensors in a 2004 dodge ram 1500 4x4

The check engine light came on. system check showing oxygen sensor is bad. where is the oxygen sensor located and how many are there in this truck?

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  • hlgjgwal Apr 01, 2009

    I have the same problem so when I checked I found 4 sensors. @ in front of the cat converter and 2 behind. The problem is si that only one of them could be bad. The trick is finding the one. I'm sure you have this problem solved by now so if you know could you pass on the information to me.

    Thanks

    Herb

  • Anonymous May 11, 2010

    are you sure it is the sensor?

    located after the intake and after the catalic.

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  • Contributor 11 Answers
  • Posted on Mar 18, 2009
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Im not for sue how many but u need to take it to autozone if u have one where u live they will tell u where it is the most comon one if u have straight eguast is the one right in front of the cats if its that one u should notice a stall out every time u fill up from below empty on ur gauge

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