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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> On-Board Diagnostic [Immobilizer System - With Advanced Keyless System] >> Security Light: DTC 12 (DTC B2103/B2103) >> Notes
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Security Light: DTC 12 (DTC B2103/B2103): Notes

DTC B2103 POSSIBLE CAUSES

DTC 12 (B2103/B2103) Coil Antenna failure.
POSSIBLE CAUSE 
  • Defective coil antenna
  • Poor connection of coil antenna connector
  • Defective keyless control module
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