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DTC P0103:00: Notes

DTC P0103:00 (L3 WITH TC) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0103:00 MAF sensor circuit high input
DETECTION CONDITION 
  • The PCM monitors input voltage from the MAF sensor when the engine is running. If the input voltage is above 4.9 V for 5 s  , the PCM determines that the MAF sensor circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • MAF/IAT sensor connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between MAF/IAT sensor terminal C and PCM terminal 1 AK
  • Open circuit in wiring harness between MAF/IAT sensor terminal B and PCM terminal 1P
  • MAF sensor malfunction
  • PCM malfunction
G06724024Courtesy of MAZDA MOTORS CORP.
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