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Home >> Mazda >> 2009 >> 3 Mazdaspeed, 2.3 L >> Repair and Diagnosis >> External Pages >> Different car >> Section 573 (On-Board Diagnostic Immobilizer System (Keyless Entry System)) >> Security Light 12, DTC B2103/P1260 [Immobilizer System (Keyless Entry System)] >> Notes

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

WARNING: This page is about a different car, the 2007 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
SECURITY LIGHT 12, DTC B2103/P1260 DETECTION CONDITION AND POSSIBLE CAUSES

SECURITY LIGHT: 12 
  • Coil antenna malfunction
  • The PCM determined a malfunction in the coil antenna even though it is normal.
DTC:  B2103/P1260  
DETECTION CONDITION 
  • Coil antenna malfunction
  • The PCM determined a malfunction in the coil antenna even though it is normal.
POSSIBLE CAUSE 
  • Coil antenna malfunction
  • Poor connection of the coil antenna connector
  • PCM malfunction
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