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Home >> Infiniti >> 2021 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 5) >> Engine (ECM) >> DTC P0101: MAF Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P0101 is displayed with other DTC, perform the trouble diagnosis for other DTC.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0101

MAF SEN/CIRCUIT-B1

(Mass air flow sensor circuit range/performance)
  • A high voltage from the sensor is sent to ECM under light load driving condition.
  • 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.)

  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air leaks
  • Intake air temperature sensor
  • Electric throttle control actuator
  • PCV hose air leak
  • Purge hose air leak
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