Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P1000: System Checks Not Complete Since Last Memory Clear & DTC P1111: System Checks Complete Since Last Memory Clear
When the DTC(s) relating to a rectified concern are cleared, P1000 (system checks not complete since last memory clear) will be flagged. This DTC does not indicate a failure, just that diagnostic drive cycles need to be performed. See DRIVE CYCLES . The vehicle's on-board diagnostic system will confirm that all the diagnostic drive cycles are complete by flagging P1111 (system checks complete since last memory clear).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.