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Old 04-04-2013, 07:30 PM   #1
Junior Member
Join Date: Dec 2010
Posts: 1
Ambient Air Pressure Sensor fault code 222

Hello everyone

I have a cummins ISB 260 uprated to 300 that is a replacement engine in my 01 Monaco Knight and installed in 2009. I originally had a cummins rv300 ISB. About a month ago I got a cummins fault code 222 (Ambient Air Pressure Sensor). I contacted Cummins and spoke with the RV Guru. He stated if the engine was uprated properly a Ambient Air Pressure Sensor was required. I have searched Hi and Low to try and find that sensor with no luck. I did hook up my Scangauge d and got a 108 code so confirmed the 222 code. Active code and will not clear. I hope that sensor is on my engine because I don't want buy a new ECM.

Any help would be greatly appreciated.

Joe Sullivan
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