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Home >> Mazda >> 2012 >> 6 s Touring Plus >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> On-Board Diagnostic [Immobilizer System (With Advanced Keyless Entry And Push Button Start System)] >> Security Light: 21, DTC: B10D8:00/P1260:00 [Immobilizer System (Advanced Keyless Entry And Push Button Start System)] >> Notes
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Security Light: 21, DTC: B10D8:00/P1260:00 [Immobilizer System (Advanced Keyless Entry And Push Button Start System)]: Notes

DTC  Security light flashing pattern  21  Only one key or no key has been programmed
M-MDS display  Keyless control module  B10D8:00
PCM  P1260:00
POSSIBLE CAUSE
  • Shortage of the number of programmed key
  • PCM malfunction
  • Keyless control module malfunction
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