Error codes P0442 and P0456... - DodgeForum.com



2nd Gen Dakota 1997 - 2004 Dakota's

Error codes P0442 and P0456...

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  #1  
Old 08-10-2006, 02:52 PM
tsh3406
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Default Error codes P0442 and P0456...

I currently have these two showing, I've checked tha gas cap and reset the computer a time or two, so I'm making an appointment with the dealer. Here's my question, could this be responsible for a 2-3 mpg loss that I've noticed?

Thanks,
Tim
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  #2  
Old 08-11-2006, 02:36 PM
steve05ram360
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Default RE: Error codes P0442 and P0456...

it could be... I had one of those codes for a bad gas cap so what i'd recommend is swapping it, reset the computer (battery disconnect for 5 minutes) and re-run it.

there is a FAQ in the 2nd gen Ram forum that has some useful info that would apply here as well (this forum)
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Old 08-11-2006, 11:28 PM
jpuder
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Default RE: Error codes P0442 and P0456...

Don't know if this will help you or not, but the manual says this:

P0442 - A small leak has been detected in the evaporative system.
P0456 - A leak has been detected in the evaporative system.

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  #4  
Old 08-12-2006, 12:11 AM
steve05ram360
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Default RE: Error codes P0442 and P0456...

yup, 442 is for a bad gas cap...
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