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Hi! I’ve got p0102 and p0103 codes on my Xterra. From what I’ve heard, this can cause issues with high RPM while idling and other similar issues, but my Xterra has run really smooth and sits around 1000 rpm while in park.

Any thoughts on what could be the problem? Thanks.
 

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year and engine please, and no matter which one 1000 rpm in park when engine is warm is far too high the 3.3 should be around 600 the 4.0 should be around 700-750 not sure on 2.4 but likely in that range 1000 rpm at idle under normal operating temp is too high. those codes are both mass airflow sensor codes, how is the mpg and power when accelerating? p0102 is maf low input and 103 is high input meaning your maf sensor on the air intake is likely shorted internally and in need of replacement, if it fails completely the truck may stall on you or may have issues starting.
 
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