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2003
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MPV ES
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Repair and Diagnosis (Single Page)
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Accessories & Equipment
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Anti-Theft Systems
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On-Board Diagnostic [Immobilizer System]
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DTC 21: Code Word/Id Number Memorized In Immobilizer Unit EEPROM Cannot Be Read
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Notes
DTC 21: Code Word/Id Number Memorized In Immobilizer Unit EEPROM Cannot Be Read: Notes
Fig 1: DTC 21 Possible Cause Chart
Courtesy of MAZDA MOTORS CORP.