DTC codes / Mazda codes / P1000
P1000 on a Mazda means the powertrain control module (PCM) has not yet completed all of its onboard diagnostic monitor tests since the memory was last cleared. The computer is not reporting a fault; it is simply telling you that the readiness monitors are incomplete, so any emissions test or smog check will be rejected until the drive cycle finishes.
Guidance is general and written for Mazda vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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