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DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
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 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 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
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