Hey guys, so I'm scratching my head here a little bit. I've replaced the thermostat, the fluid, the gray 2 pin engine coolant temperature sensor, and the 2 pin connector itself. I properly burped it and refilled it after I replaced the sensor and then I disconnected both battery terminals for an hour but the code came back on the second start up. I'm considering doing a more thorough flush again with new fluid. I did the sensor last about 1k miles later and the fluid already had a bit of debris and discoloration. My dash reads normally without any jump in the gauge at all, and I thought the 2 pin sensor meant it only sent the signal to the ECM and then to the dash, instead of the 4 pin sensor sending to both the dash and the ECM at the same time. That makes me think its not a broken wire sense my dash is reading okay. Any corrections on my logic or suggestions here?