DTC P2507 [AJ]: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
DTC P2507 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2507 PCM B+ voltage low
DETECTION CONDITION 
  • The PCM monitors the voltage of back-up battery positive terminal at PCM terminal 1E. If the PCM detected battery positive terminal voltage below 2.5 V  for 2 s  , the PCM determines that the backup voltage circuit has malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTC is stored in PCM memory.
POSSIBLE CAUSE 
  • Melt down EEC fuse
  • Open circuit in wiring between EEC fuse and PCM terminal 1E
  • Short to ground between EEC fuse and PCM terminal 1E
  • Poor connection of PCM connector
  • PCM malfunction
G04324223
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.