P1000 — OBD-II Monitor Testing Not Complete (6.7 Power Stroke)
Informational code on 6.7 Powerstroke indicating readiness monitors have not finished since the last code clear or battery disconnect. Typical on this…
What it means
Readiness monitors have not finished since the last code clear or battery disconnect.1
Most likely causes
- Recent code clear or battery disconnect — Monitors reset and need to run through a drive cycle to set readiness.1
- Incomplete drive cycle — Vehicle has not been operated through the conditions required for all monitors to run and complete.1
How to diagnose
- Verify no other DTCs are present; P1000 alone is informational.
- Check service history for recent code clear, battery disconnect, or PCM reflash.
- Confirm readiness monitor status with a scan tool; note which monitors are incomplete.
- Perform manufacturer-specified drive cycle for 6.7 Powerstroke and re-check readiness.
- If monitors remain incomplete after proper drive cycle, inspect for underlying faults that prevent monitor execution (e.g., sensor or system issues that keep monitors from running).
Parts and tools you may need
- OBD-II scan tool capable of reading readiness monitors
- Service information for 6.7 Powerstroke drive cycle procedure
Rough cost and difficulty
Usually no repair cost if only P1000 is present; cost incurred only if underlying fault is found.
When to see a pro
If readiness monitors will not complete after a proper drive cycle, have a diesel technician diagnose why monitors are inhibited. Do not attempt high-pressure fuel system or safety-critical repairs without professional training.
Sources
Watch a repair
Third-party videos, not ours — for illustration. Confirm anything against the factory service information for your truck.
Help improve this guide
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