Understanding and Resolving P0402 Code 6.7 Powerstroke Issues
P0402 is a diagnostic trouble code (DTC) for an “Excessive Exhaust Gas Recirculation (EGR) Flow” on the 6.7L Powerstroke Diesel engine. This code indicates that the EGR valve is opening too much, which can lead to poor fuel economy, increased emissions, and decreased engine power. In order to resolve this issue, the EGR valve must…