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Hello to all. i have a bit of a dilema. my car is a 2001 civicv lx that was auto and i converted to 5pd some time ago. just recently i was able to get anothe ecu for my car that was a 5spd ecu so i could remove all sorts of codes that i had. Got the ecu reflashed and it was only throwing one code which was the knock sensor so i checked that and it wasnt plugged in. then a new code popped up. it was p0141 which was low voltage in the 02 sensor and some other code. so i rewired t2 main wires straight from the ecu to thew 02 sensor and was able to get a voltage reading to the 02 sensor and it removed all the codes and now is only giving me a p0135 code even though i bought 3 new ones just to make sure it was not the sensor so now im stuck and cant get this code to go away. im getting a voltage reading for it so why is it faulty now???im frustrated because im trying to get my car to pass emissions and this thing is keeping me back

 
Rep Power: 388

Are you sure you have the right sensor for it? Was the ECU for an LX or EX?? Because your ECU will be looking for EX OR LX (depending on the cluster) 20XX primary O2 sensor in bank 1 and a EX or LX 20XX secondary O2 sensor in bank 2. You need to have the sensors that the ECU is looking for. If you have an 01 and a 05 ECU, its looking for wideband O2 sensors, which you probably only have the narrowband.