A dtc p1000 isn't a fault code, it basically. means you have to continue to drive you car until all engine monitors finish their test and no faults are happening. When you either disconnect your battery or had someone run a scanner test on it and clear any fault codes, it clears the memory of the p.c.m and monitors that watch certain systems on the car, o2 sensors, misfire, evap system, cat efficiency and others to make sure everything is ok.it has to go through 3 drive cycles and not see any fault for the p1000 code to go away..How long dies a drive cycle take? All cars are different, you have to drive above 70 mph for a certain amount of time, have to do no brake slow to stops a few times, maintain 35 for an amount of time and so on....at the dealership each tech has a sheet copied out of shop manual showing what we have to do to complete a drive cycle.sometimes you get it first shot, sometimes it takes a few trips.just 1 wrong and monitors will not pass..just be patient and continue to drive.Take it out on the highway and drive 10-20 miles and see what happens....happy drivi
if code comes back do another pcm scan and make sure it completes most parts stores can do a scan for you with no charge ...i.e. advance ,auto zones , oriellys I know do for free
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