Hello. I have a 2007 Honda Accord V6. I bought the Accord with a bad motor and swapped in a good one. I started it up and had the engine light on so I did a code read with a snap on computer. It gave me the code P2185 Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage. I bought a new temperature sensor, installed it, cleared the light and not even seconds later it came back on. Thought it was bad too so I replaced it again and still the same issue. I have looked everywhere online and can not find if there is another sensor that Needs to be changed. The 4-cylinder ones have two, on the radiator and the one by the throttle body area. What am I missing here? Also if this helps, I touched the lower radiator hose and it was not hot at all, while the top one was. So throttle body might be going out but also the car does not overheat at all. Drove it for a solid 30 minutes without it overheating. Can someone plz help me.

 

hi unplug sensor check for 5v ref if no 5v then check engine grounds may have missed 1 on the swap just a thought

 

did you ever get this fixed??? I have the same exact issue and can’t clear the code to turn off the light it’s frustrating as s***