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DTC P0102: Notes

DTC P0102 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0102 MAF circuit low input
DETECTION CONDITION 
  • The PCM monitors the input voltage from the MAF sensor when the engine is running. If the input voltage at PCM terminal 1AK is 0.21 V or below  , the PCM determines that the MAF circuit has a 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 the PCM memory.
POSSIBLE CAUSE 
  • MAF sensor malfunction
  • Connector or terminal malfunction
  • Open circuit between main relay terminal C and MAF/IAT sensor terminal A
  • Open circuit between MAF/IAT sensor terminal C and PCM terminal 1AK
  • Short to ground circuit between MAF/IAT sensor terminal C and PCM terminal 1AK
  • PCM malfunction
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