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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 502 (Engine Control System (DTC/Circuit Diagnosis) (1 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0101: MAF Sensor >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If DTC P0101 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0101

MAF SEN/CIRCUIT-B1

[Mass air flow (MAF) 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

    (Intake air temperature sensor circuit is open or shorted.)

  • Intake air leaks
  • MAF sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor
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