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2004
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MPV ES
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On-Board Diagnostic [Engine Control System AJ]
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DTC P1621: Code Word Does Not Match After Engine Cranking
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Diagnostic Procedure
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Diagnostic Procedure
Fig 1: DTC P1621 Diagnostic Procedure Chart
Courtesy of MAZDA MOTORS CORP.