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Home >> Mazda >> 2009 >> MX-5 Miata SV >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System LF 2.0L) >> DTC P2504 [LF] >> Notes

DTC P2504 [LF]: Notes

DTC P2504 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2504 Charging system voltage high input
DETECTION CONDITION 
  • The PCM judges the generator output voltage is above 18.5 V  or battery voltage is above 16.0 V  during the engine running.

Diagnostic support note 
  • This is a continuous monitor (other).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Generator connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between generator terminal D and PCM terminal 2AI
  • Generator malfunction
  • PCM malfunction
G06150011Courtesy of MAZDA MOTORS CORP.