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Mazda
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2002
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MX-5 Miata Base, Standard
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Repair and Diagnosis
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Body & Frame
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Door Locks
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Immobilizer System
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DTC 21: Code Word/ID Number Memorized In Immobilizer Unit EEPROM Cannot Be Read
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Possible Cause
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Cause
Fig 1: Possible Cause
Courtesy of MAZDA MOTORS CORP.