DTC P0400, P0401, P0404, P0408: EGR System Malfunction

WARNING: This page is about a different car, the 2003 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: EGR System Malfunction Troubleshooting Procedure (1 Of 3)

Courtesy of FORD MOTOR CO.

Fig 2: EGR System Malfunction Troubleshooting Procedure (2 Of 3)

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Fig 3: EGR System Malfunction Troubleshooting Procedure (3 Of 3)

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Fig 4: EGR System Malfunction Inspection Procedure (1 Of 8)

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Fig 5: EGR System Malfunction Inspection Procedure (2 Of 8)

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Fig 6: EGR System Malfunction Inspection Procedure (3 Of 8)

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Fig 7: EGR System Malfunction Inspection Procedure (4 Of 8)

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Fig 8: EGR System Malfunction Inspection Procedure (5 Of 8)

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Fig 9: EGR System Malfunction Inspection Procedure (6 Of 8)

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Fig 10: EGR System Malfunction Inspection Procedure (7 Of 8)

Courtesy of FORD MOTOR CO.

Fig 11: EGR System Malfunction Inspection Procedure (8 Of 8)

Courtesy of FORD MOTOR CO.