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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 Through P0153 >> DTC P0102, P0103: MAF Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0102 MAF SEN/CIRCUIT-B1 (Mass air flow sensor circuit low input) An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors (The mass air flow sensor circuit is open or shorted.)
  • Intake air leakage
  • Mass air flow sensor
P0103 MAF SEN/CIRCUIT-B1 (Mass air flow sensor circuit high input) An excessively high voltage from the sensor is sent to ECM.
  • Harness or connectors (The mass air flow sensor circuit is open or shorted.)
  • Mass air flow sensor