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Old 06-05-2011, 04:40 AM   #1
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Warning Light on Dash

I have a 2000 Monaco Windsor with a 330 hp Cummings. I have noticed an amber "warning" light on the dash. It comes on a few minutes after starting coach. I have checked the fault code and it's a 222 fault code. I looked this up on the internet and it says "Ambient Air Pressure Sensor Circuit". Can anyone tell me what this means. Is this a critical malfunction that I should have serviced ASAP? Or is this something that can wait. Oh, and BTW, I am getting ready to go on a 5000 mile road trip with my wife and 4 children. We are leaving in 4 days. Thanks for any information you may have.
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Old 06-05-2011, 05:54 AM   #2
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This link to 222 fault code may help.

I am having trouble with this link. If you click on the top link in the redirect page, it will take you to the document. ( If some one could fix the link, it would be greatly appreciated.)

http://www.google.com/url?sa=t&sourc...VmB1C25fD0JZPg



In the northeast, Cummins northeast is open until 11:00 pm, maybe there is a truck repair facility in your area that is also.

Paul
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Old 06-05-2011, 06:30 AM   #3
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That reads like something you should fix or have fixed.
Unless you have multiple failures, it is probably a bad sensor which just needs replacing.

The part that says "engine torque derate after 50 hours" doesn't sound good for a long trip.
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Old 06-05-2011, 08:42 AM   #4
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Yes, it needs to be fixed. If you travel into the mountains or encounter weather with substantially different air pressure than normal sea-level temp & pressure, your engine will run poorly because it does not have the correct input on air density. Even highand low temperature can affect air pressure, which is what this sensor reads.
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Old 06-05-2011, 02:11 PM   #5
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Thank you all for your information, I will have it checked out.
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