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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 4) >> DTC/Circuit Diagnosis >> DTC P0101, P010B: MAF Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:

If DTC P0101 or P010B is displayed with other DTC, first perform the trouble diagnosis for other DTC. 

DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause
P0101 MAF SEN/CIRCUIT-B1
(Mass Air Flow Sensor (Bank 1) 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 (Bank 1)
  • EVAP Control System Pressure Sensor
  • Intake air leaks
  • Intake Air Temperature Sensor
P010B MAF SEN/CIRCUIT-B2
(Mass Air Flow Sensor (Bank 2) Circuit range/performance)
  • Harness or connectors

    (The Sensor Circuit is open or shorted.)

  • Mass Air Flow Sensor (Bank 2)
  • EVAP Control System Pressure Sensor
  • Intake air leaks
  • Intake Air Temperature Sensor