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Old 09-07-2012, 01:37 AM
RedneckMechanic RedneckMechanic is offline
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Join Date: Sep 2011
Location: McMinnville, OR
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Vehicle: 2002 Dodge Ram 1500 4x4
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Engine: 2002-2003 360ci (5.9L) Magnum V8 245hp 335lb/ft
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The PCM DOES actually use the outside temp sensor to cross check the intake air temp sensor. If the variables are too far out of whack, sometimes it'll throw an engine code. We chased one for a long time before we realized what it was. But yes, for the most part it's just a convenience item.
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