P1000 means that all of the monitor testing is not complete. It usually is set when the battery is disconnected, someone did a code reset or if something like EVAP or O2 sensor testing has not finished. Take a look at the actual monitors and see which ones have not set. It is a Ford and Ford related only code, It will show up on Fords, Lincolns, Mazda, Jaguar.
Basically it means that the vehicle did not have a full drive cycle to set everything.
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Tuesday, July 4th, 2017 AT 7:51 AM