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2004
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MX-5 Miata Mazdaspeed
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Repair and Diagnosis
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Engine Performance
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System
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On-Board Diagnostic (Engine Control System BP, BP With TC]
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DTC P1623: Code Word Or Key Id Number Read/Write Error In Pcm
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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: Diagnostic Procedure - DTC P1623 [BP, BP With TC]
Courtesy of MAZDA MOTORS CORP.