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P1000 — OBD System Readiness Test Not Complete

Low Severity  ·  System

OBD-II code P1000 means your vehicle's ECU detected: OBD System Readiness Test Not Complete. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

Low severity — safe to drive in most cases. Clear the code and monitor. If it returns, have it inspected.
Typical Repair Cost
$0
Parts + labor, national average
Severity
Low
Monitor — low urgency
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Common Causes of P1000

  • Battery recently disconnected
  • Recent code clear
  • Short drive cycle
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How to Fix Code P1000

1
Drive normally for 1–2 full drive cycles (city + highway)
2
Perform specific monitor drive cycle from owner manual
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FAQ — Code P1000

What does OBD-II code P1000 mean?
P1000 means your vehicle's onboard computer detected: OBD System Readiness Test Not Complete. This is a low-severity code in the System category.
How much does it cost to fix code P1000?
Typical repair cost for P1000 is $0 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.
Can I drive my car with code P1000?
Code P1000 is low severity. In most cases you can drive normally, but clear the code and monitor whether it returns.
What are the most common causes of P1000?
The most common causes are: Battery recently disconnected, Recent code clear, Short drive cycle. Always start with the cheapest diagnosis step before replacing parts.
Will code P1000 clear itself?
Code P1000 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P1000 showing on your car?

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OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.