O2 Sensor in a DA GS-R

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After I reset the ecu, the cel doesn't come on until I start the engine (if i turn the key to ON the cel doesnt come on). I was wondering if this means that the sensor is bad or if it is my wiring, or both.
 
ok so u should either be running a 4 wire o2 or 2 single wire o2's if ur not then that could be ur problem. and if u are then its either faulty wireing. or the sensor is bad. if its wiring try switching the 2 black wires on the o2 if ur running a 4 wire. not sure wat u got but there are some options.
 
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