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DTC P2507:00: Notes

DTC P2507:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P2507:00 PCM battery voltage low
DETECTION CONDITION 
  • The PCM monitors the voltage of the back-up battery positive terminal. If the PCM detects that the batter positive terminal voltage is below 2.5 V  for 5 s  , the PCM determines that the back-up voltage circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Battery malfunction
  • PCM connector or terminals malfunction
  • Short to ground or open circuit in PCM power supply circuit
    • Short to ground in wiring harness between battery positive terminal and PCM terminal 1BA
    • ENG+B 10 A fuse malfunction
    • Open circuit in wiring harness between battery positive terminal and PCM terminal 1BA
  • PCM malfunction
G06731693Courtesy of MAZDA MOTORS CORP.
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