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DTC P2507 [LF]: Notes

DTC P2507 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2507 PCM battery voltage low input
DETECTION CONDITION 
  • The PCM monitors the voltage of back-up battery positive terminal. If the PCM detects battery positive terminal voltage below 6 V  for 5 s  when the battery voltage is more than 8 V  , the PCM determines that the backup 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/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Battery malfunction
  • PCM connector or terminals malfunction
  • Open circuit or short to ground in battery positive terminal and PCM terminal 1BA
    • Short to ground in wiring harness between battery positive terminal and PCM terminal 1BA
    • PCM monitor circuit related fuse malfunction
    • Open circuit in wiring harness between battery positive terminal and PCM terminal 1BA
  • PCM malfunction
G06150012Courtesy of MAZDA MOTORS CORP.
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