like i said before if the pedal dance does not clear it then you will have to use the computer program. You will not get the lights to stop flashing till you clear the code, or resolve the outstanding issue that may still be present.
You can try replacing the temp sensor, it may be faulty but generally if a code is persistant the component that is failing is the cause or the ecm hardsets the code and the only way to clear it is the PC program.

try disconnecting the battery for 30 minutes and see if that clears it.