this code came up about 4 months ago, reset the computer, and haven't had a single problem since. it poped back up the other day and the kj is idling rough and up and down from 800 - 1500 rpm. What are the possible causes of this? I don't want to replace the tps if it wont do anything, could my k&n drop in be causing it?

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04' blue limited edition
Wrapped in Ironman
245/75/16 Khumos (2nd set)

You didn't get the memo about the TPS reports?

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Randy, Apache Junction, Arizona
04 Liberty
Blown motor and extensive body damage.

replace the throttle position sensor.