Hey so our 2012 western 4900 with the DD15 is throwing a engine light on the console. The engine fan won't shut off and there's a slight loss of power. Turbo runs about 5 to 7 psi lower than normal. First off it's been deleted so this isn't a def issue. It's not pulling any codes when we check it so I'm just trying to figure out what to do. Trucks been deleted over 4 years now with no issues so I'm sure its not that
2012 4900 dd15 engine light
Discussion in 'Western Star Forum' started by WestStarHHRM, Mar 24, 2023.