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Home >> Infiniti >> 2009 >> EX35 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0153 >> DTC P0101, P010B: MAF Sensor >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101 Mass air flow sensor (bank 1) circuit range/performance A) A high voltage from the sensor is sent to ECM under light load driving condition.
  • Harness or connectors. (The sensor circuit is open or shorted.)
  • Mass air flow sensor
  • EVAP control system pressure sensor
B) A low voltage from the sensor is sent to ECM under heavy load driving condition.
  • Harness or connectors. (The sensor circuit is open or shorted.)
  • Intake air leaks
  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor
P010B Mass air flow sensor (bank 2) circuit range/performance A) A high voltage from the sensor is sent to ECM under light load driving condition.
  • Harness or connectors. (The sensor circuit is open or shorted.)
  • Mass air flow sensor
  • EVAP control system pressure sensor
B) A low voltage from the sensor is sent to ECM under heavy load driving condition.
  • Harness or connectors. (The sensor circuit is open or shorted.)
  • Intake air leaks
  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor