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Home >> Mazda >> 2011 >> 3 Mazdaspeed, 2.3 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 571 (On-Board Diagnostic [Immobilizer System (Advanced Keyless Entry And Push Button Start System)]) >> Security Light: 16, DTC: U0100:87/P1260:00 [Immobilizer System (Advanced Keyless Entry And Push Button Start System)] >> Notes

Security Light: 16, DTC: U0100:87/P1260:00 [Immobilizer System (Advanced Keyless Entry And Push Button Start System)]: Notes

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DTC: U0100:87/P1260:00 (IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSE

DTC Security light flashing pattern 16 Communication error with PCM (No response)
M-MDS display Keyless control module U0100:87
PCM P1260:00
DETECTION CONDITION 
  • Communication error between keyless control module and PCM (no response).
POSSIBLE CAUSE 
  • Multiplex communication system DTC is stored (CAN line)
  • PCM malfunction
  • Keyless control module malfunction
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