Anyone know what this resistor is for?
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This is a discussion on Anyone know what this resistor is for? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hey all, Noticed this resistor the other day on one of the connectors. It's on my 2005 wrx. The sensor ...

  1. #1
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    Anyone know what this resistor is for?

    Hey all,

    Noticed this resistor the other day on one of the connectors. It's on my 2005 wrx. The sensor is located on the passenger side, right next to where my front o2 sensor connects. Anyone have any idea what it's for? or what sensor it's on? Thanks for any input


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    He simply abides. SD_GR's Avatar
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    If you bought the car used and the car has been modified, the resistor may be to eliminate the CEL that would be generated by missing the cat in the up pipe.
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    Thanks for the quick response! I did purchase it used and modified. It has a full tbe and I was told that it's catless. Is that resistor trick pretty common for a catless up pipe?

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    Master Baiter EJ257's Avatar
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    That is, in fact, the EGT connector; as SD mentioned, the resistor is used to eliminate the DTC from removing the sensor from the uppipe (common with a catless version). It's common.
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    Thank you!

    I'm trying to backtrack the mods done to my car and I feel like pulling my hair out sometimes. First time owner of a Wrx, let alone a boosted vehicle so I have a lot of learning to do.

    I appreciate the help.

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