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DTC P2502:00: Notes

DTC P2502:00 (LF, L5) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2502:00 Charging system voltage problem
DETECTION CONDITION 
  • The PCM determines that the generator output voltage is above 17 V  or battery voltage is below 11 V  while the engine is running.
Diagnostic support note 
  • This is a continuous monitor (other).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Battery malfunction
  • Poor installation of generator terminal
  • Short to ground or open circuit in generator power supply circuit
    • Short to ground in wiring harness between generator terminal B and battery positive terminal
    • STARTER fuse 250 A (LF)/450 A (L5) malfunction
    • Open circuit in wiring harness between generator terminal B and battery positive terminal
  • Generator malfunction
  • PCM malfunction
G06733895Courtesy of MAZDA MOTORS CORP.