P1000Auxiliary Emission Controls

OBD-II Monitor Testing Not Complete (Ford)

P1000 is a Ford/Mazda/Jaguar code that means the OBD-II readiness monitors have not finished running since the battery was disconnected or codes were cleared. It is not a fault; the drive cycle simply needs to complete.

🚗 Yes. P1000 is informational and does not indicate a fault by itself.

LOW

severity

🎯 Top Causes, Ranked by Likelihood

#1Recently cleared codes or disconnected battery$0

45%

The keep-alive memory was reset and monitors have not re-run yet.

#2Incomplete drive cycle$0

30%

The vehicle has not been driven through the conditions needed to complete the readiness tests.

#3An interrupting fault sets a real DTCvaries

25%

If another monitor fails, it prevents readiness from completing and stores its own code.

🩺 Common Symptoms

Check engine light may be off
Failed emissions readiness check
Monitors show not ready on a scan tool

💰 Repair Cost: DIY vs Shop

DIY Cost

Shop Cost

$0-$100

📋 Free OBD2 Code Cheat Sheet

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🔧 How to Diagnose P1000

1Confirm no other DTCs are stored

2Complete a full Ford OBD drive cycle

3Recheck readiness monitors with a scan tool

4Retest emissions once P1000 clears

❓ Frequently Asked Questions

Is P1000 a real problem?

No. P1000 just means the OBD readiness monitors have not finished running yet, usually after a battery disconnect or cleared codes.

How do I clear P1000?

Drive the vehicle through a complete Ford drive cycle so all monitors run and complete; the code clears itself.

Can P1000 fail an emissions test?

Yes, because monitors are not ready. Complete the drive cycle first, then retest.

🔗 Related Codes

P1111P0100P0300