2013 Mazda MX-5 Miata Grand Touring, Automatic TransFACTORY OEM SERVICE PROCEDURE

Security Light 14, DTC -/B1602/P1260 [Immobilizer System (Advanced Keyless And Start System)]: Notes

DTC B1602/P1260 POSSIBLE CAUSE REFERENCE

DTC Security light flashing pattern 14 PCM received invalid format of ID number from transponder
M-MDS display Keyless control module -
Instrument cluster B1602
PCM P1260
POSSIBLE CAUSE
  • Any of the following items are touching or near the key head.
    • Spare keys
    • Keys for other vehicles equipped with an immobilizer system
    • Any metallic object
    • Any electronic device, or any credit or other cards with magnetic strips
  • Defective transponder in the key
  • Defective coil antenna
  • Defective PCM
  • Defective keyless control module
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When to See a Mechanic

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

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

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