Thanks for the great question.
This means that all the monitors have not passed yet. This code is usually set either by reprograming the PCM or unhooking the battery. You will need to drive the truck for a day or so until all the on board monitors have passed.
since trying to reprogram for fuel saving withHyper Tech programmer & have just reprogrammed with HyTech 1) do we just unhook battery ? and not sure what you mean by on board monitors have passed. Will a seven hour trip be the same as few days?
Whenever you reset the ford computer either by reprograming or unhooking the battery, this clears all the emission monitors. These monitors must go through a series of drive tests to be sure all the sensors are working correctly. Until all monitors have gone through these test, the P1000 code will remain. Only after these tests have passed, then the monitors will have a pass status and the P1000 will go away. This code is basically for when you go to get your emissions tested and the tester sees the P1000 will not allow the truck to have a passing test.
The 7 hour trip might be enough to cause all the monitors to pass. Again, you should only be concerned if you are getting an emissions test for your registration.
You are very welcome!