OBD-II Monitor Testing Incomplete (Ford specific) / OBDII Drive Cycle Not Complete
What does P1000 mean?
The P1000 code means the vehicle's onboard diagnostic system has detected: OBD-II Monitor Testing Incomplete (Ford specific) / OBDII Drive Cycle Not Complete. This is a minor severity code.
Common Symptoms
- No drivability symptoms
- Emissions readiness monitors show as incomplete
- May fail emissions inspection (not ready status)
Probable Causes (Ranked by Likelihood)
- Battery recently disconnected or replaced Very High
- PCM recently replaced or reprogrammed High
- Insufficient driving after a repair to complete all monitors High
Step-by-Step Diagnostic Procedure
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Check the readiness monitor status with a scan tool. Identify which monitors are incomplete.
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Perform the proper OBD-II drive cycle for your vehicle. Ford provides a specific drive cycle procedure for P1000.
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The drive cycle typically requires a cold start, highway driving at various speeds, deceleration, and idle periods.
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P1000 clears automatically once all monitors run and pass -- you do not need to clear it manually.
Frequently Asked Questions
Will my car fail emissions with P1000?
It depends on your state. Many states allow one or two incomplete monitors and will still pass the vehicle. However, if the monitors are not ready, some states will issue a rejection. Perform a complete drive cycle before going to emissions.
How do I perform a Ford P1000 drive cycle?
Start with a cold soak (engine off for 8+ hours). Start and idle for 2-3 minutes. Drive at 45-55 mph for 5 minutes without braking. Decelerate to 20 mph without braking. Accelerate to 55-60 mph and hold for 3 minutes. Decelerate to a stop. Idle for 2 minutes. This runs most monitors.