It just means your EEC hasn't completed testing and recalibrating itself to your sensors. You'll see this if the EEC was recently cleared or reset. Until you complete two drive cycles, the P1000 will be there.
oic... cause my mom's check engine light came on (01 GT). so i checked for codes with my predator and nothing showed up. i started the car and the check engine light was still on. i checked again with the predator, it still said "no codes found". so i cleared the eec and thats when that code poped up.... thats weird that my predator would not read the code....