This sounds too familiar to what I have going on, but Im not quite in that deep yet. Im fighting to have the shop that did the damage pay for it. I have put a new Honda rear 02 sensor, still CEL for a heater circuit fault. My next step is to replace the ECU. I'd suggest checking the wires for continuity on the chassis side connector, jacked wires will continue to throw a code even after sensor replacement. Stop paying Honda sooo much damn money!!