Lately I have been having a strange no-start scenario. The weather has warmed up lately and probably has something to do with it. When first cranking the car in the morning it starts fine, after driving and parking for anywhere from 15 minutes to an hour is when the problem usually occurs. The car does not even attempt to crank or turn over, just a click each time the key is turned. After opening the hood and waiting ~5 minutes the car will eventually crank. I have a new fuel pump relay (and can hear it working) so it is not that. My ECU shows no codes, the EZK shows code 2-2-4 (coolant temperature sensor signal missing or faulty). Could this whole problem be the coolant temp sensor?
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