What is the P1401 fault-error code?   The P1401 fault-error code ("DPFE Circuit High Input") is usually common on Ford, Mazda, Lincoln,...

What is P0403 Fault-Error Code?   P0403 fault-error code indicates "EGR Circuit Malfunction". The EGR (Exhaust Gas Recirculation) system...

EGR 2 Technological Developments and Updates Current technological developments regarding EGR systems: 1. Electronic Control:  The EGR...

What is EGR? How do they work? What kind of problems do they have? Integrated into the vehicle's engine management system, the aptly...