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Home >> Nissan-Datsun >> 2007 >> Pathfinder S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 To P0159 >> DTC P0101 MAF Sensor >> On Board Diagnosis Logic
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On Board Diagnosis Logic

DTC DETECTING CONDITION POSSIBLE CAUSE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101
0101
Mass air flow sensor 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
  • Intake air temperature 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