Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 06-05-2011, 04:40 AM   #1
Junior Member
rdentist99's Avatar
Join Date: Jun 2011
Posts: 22
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.

rdentist99 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-05-2011, 05:54 AM   #2
Junior Member
Join Date: May 2005
Posts: 29
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.)


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


2000 MountainAire 4093 41' Cummins Isc 350 2004 and 2005, Grand Cherokee Limited's, CoachNet
ploiselle is offline   Reply With Quote
Old 06-05-2011, 06:30 AM   #3
Registered User

Monaco Owners Club
Join Date: May 2009
Posts: 3,198
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.
JimM68 is offline   Reply With Quote
Old 06-05-2011, 08:42 AM   #4
Moderator Emeritus
Gary RVRoamer's Avatar

Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,750
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.
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is online now   Reply With Quote
Old 06-05-2011, 02:11 PM   #5
Junior Member
rdentist99's Avatar
Join Date: Jun 2011
Posts: 22
Thank you all for your information, I will have it checked out.
rdentist99 is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
battery light on dash bbhereiam MH-General Discussions & Problems 3 09-15-2010 06:19 PM
Odd dash light bruceh Workhorse and Chevrolet Chassis Motorhome Forum 23 12-29-2009 01:58 PM
Warning light comes on glamisdunes MH-General Discussions & Problems 10 12-14-2009 04:37 PM
ABS Warning light, troubleshooting, and clearing the fault TerryM Alpine Coach Owner's Forum 8 07-31-2009 02:38 PM
Low coolant warning light heads up warning autofish Winnebago Industries Owner's Forum 1 06-22-2009 08:00 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:34 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.