when i plugged in my P73 ecu i got no spark, so i jumped the tester plug to see what trouble codes i got. the trouble code light came on it didnt flash it just stayed on.is this the trouble code for the ecu???? also if i plugged in my old P06 ECU and didnt reset that code would that stop my old ecu getting the motor to spark? the motors a b18c 99ITR in my 95 civic help!!!!!!