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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 290 (Engine Control System - DTCS U0101 To P0153) >> DTC P0102, P0103: MAF Sensor >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
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