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Home › Mazda › 2004 › MPV ES › Repair and Diagnosis › Engine Performance › System › On-Board Diagnostic [Engine Control System AJ] › DTC P0401:EGR Flow Insufficient Detected › Diagnostic procedure

Diagnostic procedure

Fig 1: DTC P0401 Diagnostic Procedure Chart (Step 1-5)
G00992346Courtesy of MAZDA MOTORS CORP.
Fig 2: DTC P0401 Diagnostic Procedure Chart (Step 6-12)
G00992347Courtesy of MAZDA MOTORS CORP.
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