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

Fig 1: Exhaust Gas Recirculation (EGR) Insufficient Flow System Diagram
G06562714Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Exhaust Gas Recirculation (EGR) Normal Operation And System Failure Diagram
G06123600Courtesy of AMERICAN HONDA MOTOR CO., INC.