P0401 Code Ford 6.0 Diesel Expert Step-by-Step Fix 2026
📌 Quick Summary The P0401 code on a Ford 6.0L Powerstroke signals insufficient EGR flow, usually caused by heavy soot buildup or a stuck valve. Cleaning or replacing the EGR valve is often the first step to restoring proper engine performance. The P0401 code on your 6.0L Powerstroke indicates that the Powertrain Control Module has…




























