Security Light 12, DTC B2103/P1260 [Immobilizer System (Keyless Entry System)]: Notes

2013 Mazda MX-5 Miata Grand Touring, Automatic TransSECTION Notes
DTC B2103/P1260 POSSIBLE CAUSE REFERENCE

DTC Security light flashing pattern 12
  • Coil antenna malfunction
  • PCM determined a malfunction in coil antenna even though it is normal.
M-MDS display Instrument cluster B2103
PCM P1260
POSSIBLE CAUSEΒ 
  • Poor connection of the coil antenna connector
  • Coil antenna malfunction
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.