Indicates the ECT or CHT sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting the engine.

possible causes:
Insufficient warm up time
Low engine coolant level
Leaking or stuck open thermostat
Malfunctioning ECT sensor
Malfunctioning CHT sensor

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checked alldata and according to that it points to your front oxygen sensor. I'm more inclined to go by this than my previous post.

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code desciption points you in the wrong direction ....... O2 is the cause, and was damaged by coolant when the head gasket failed.