Hello all, I'm new here and have tried doing tons of research on my own but cant find the answers I seek. The issue I'm having is I recently acquired a 2000 honda accord DX that has been swapped with a f22b2 engine. With that being said I keep getting a p0135 02 heater circuit malfunction. I've tried replacing the sensor and also tried the resistor mod but still have the code. I've check my continuity in all wires and everything points to replacing the ecu. I currently have the factory 37820-PAB-A02 ecu. Everything else works great except for this one issue that I'm trying desperately trying to correct so I can get it to pass the oB2 test. Does anyone have any insight on what to do? Thanks again for all help and sorry about being the FNG.