Manufacturer-specific

Ford P1000: OBD System Readiness Test Not Complete

Manufacturer-specific Ford status indicating that required OBD-II readiness / self-tests have not completed.

Handheld OBD scan tool displaying Ford code P1000 inside a vehicle — A scan tool may show P1000 while the MIL is off. Always read monitor status and other DTCs, not only this code.

Usually low by itselfOBD readiness / PCM status

Full P1000 guide

The complete pillar article is the P1000 Code Ford homepage. This page is the compact DTC definition.

What the code tells you

Required on-board diagnostic monitors have not all reached a complete/ready state.
A recent battery disconnect, code clear, or PCM reset is a common context.

What it does not tell you

Which part has failed.
That the catalytic converter, battery, or a sensor is defective.
That the vehicle will pass or fail an inspection in every jurisdiction.

Diagnostic direction

1
Read all code types and the full readiness list.
2
If only P1000 is present after a reset, complete appropriate driving and recheck monitors.
3
If a specific monitor stays incomplete, diagnose that monitor’s enable conditions and any related DTCs.

Related codes

P0420, P0455, P0171, P0401, P0135

Possible causes are listed only when they are this code’s actual meaning — not a generic template pasted onto every DTC.

This site provides general diagnostic information. Vehicle procedures vary by model, year, engine, and calibration. Follow Ford service information and local regulations, and use a qualified technician when diagnosis or repair exceeds your experience.