Warning Code 278 following lift pump replacement
My lift pump was replaced due to a leak and now the dash warning light comes on within about a minute. The diagnostics code indicated is 278 which indicates lift pump circuit. The RV is a 2003 Monaco Camelot with a 350 Cummins ISC. Mileage is 39,599 miles. The replacement pump came from Cummins and was described as a "universal'" newer pump which fits my engine. We have checked everything we can think of and the RV has had filters changed and new fluids. I would like to avoid the Cummins shop if possible if there is something else we may due to troubleshoot.