I知 having a very difficult situation with my B16a swap in a 99 Dx hatch. I have a P0123, P0135, and a P0141. It has a em1 harness, and a P2t ecu. I知 extremely lost, I need help on how to get these codes removed.

 

P0123 is the TPS sensor, try checking /calibrating it with a multimeter and double check you have the correct plug to the TPS sensor.

P0135, and a P0141 are for the O2 sensors bank 1 and bank 2, double check they are plugged in the engine harness and not switched! you could have them backwards.

 

The downstream o2 is wired straight to the P2t ecu and the upstream o2 is plugged into the em1 engine harness. I did check my tps sensor, I知 concerned why I got P0141 code. Thanks for your time, I appreciate it.