Allen May Posted October 30, 2016 Share Posted October 30, 2016 Hello i am new to this forum and the boxer engine. Can anyone help me try and locate where the wireing is for the up pipe oxygen sensor ? The person who i brought the car off or one of it previous owners has removed it and hiden the wire in the engine bay or got ride of it completely i have no idea which and qould very much like to reinstall the item as i have 2002 bugeye wrx that needs to stop showing the check engine light after a hearty drive. Any help would be appreciated thank you in advance Quote Link to comment Share on other sites More sharing options...
Scooby1972 Posted October 30, 2016 Share Posted October 30, 2016 He may have done a decat in the upipe which means you need a a resistor to join wires and stop check light have a google loads of info.. Quote Link to comment Share on other sites More sharing options...
Sandals Posted October 30, 2016 Share Posted October 30, 2016 The sensor in the up pipe is not an o2 sensor, it's a temperature sensor. The plug for it is on the driver side of the engine bay, if it is a decat one, you can put a resistor in the plug to remove the cel as Scooby1972 has said. There is an o2 sensor in the headers just before the up pipe, plug is in the same place Quote Link to comment Share on other sites More sharing options...
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