DTC P0401: Exhaust Gas Recirculation (EGR) Insufficient Flow: Notes

Fig 1: Exhaust Gas Recirculation (EGR) Insufficient Flow - Wiring Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Exhaust Gas Recirculation (EGR) Valve Operation Chart

Courtesy of AMERICAN HONDA MOTOR CO., INC.