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Check Engine - P0109 ??????????

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Old 10-04-2006, 12:12 AM
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Unhappy Check Engine - P0109 ??????????

Anybody know what P0109 is? It's not in the list in tech facts.
OOps, I think this post is in the wrong place. Please move it if needed
Old 10-04-2006, 12:19 AM
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this is what I found....

P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

and....

P0109 Intake Air Temperature Circuit Malfunction


have you been playing with your intake or anything like that???
Old 10-04-2006, 12:28 AM
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The only thing I've touched under the hood is the oil dip stick. Truck only has 2000 miles on it.
Old 10-04-2006, 07:01 PM
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check the connection on the iat sensor on the filter.. might be a loose connection [hopefully] or a damaged wire or loose connection at ecm...
Old 10-05-2006, 01:30 AM
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Got it fixed already Apparently there is a tsb out for this specific problem. The service guy told me that when the code pops up you just bring it in and they re-flash the ecm and you're on your way ( well it took them 5.5 hours to do it)... Anyway, if you don't get the code then you don't need to worry about it.
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