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Home >> Mazda >> 2017 >> CX-5 Touring, FWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 5) >> DTC P0101-00: MAF Sensor Circuit Range/Performance Problem >> Notes
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DTC P0101-00: MAF Sensor Circuit Range/Performance Problem: Notes

DTC DETECTION DESCRIPTION

DTC P0101:00 MAF sensor circuit range/performance problem
DETECTION CONDITION
  • The difference between the intake air amount measured by the MAF sensor and the estimated intake air amount estimated by the MAP sensor is outside of the specified value.
Diagnostic support note
  • This is a continuous monitor (CCM).
  • The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA/Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Not applicable
POSSIBLE CAUSE
  • MAP sensor/IAT sensor No. 2 connector or terminals malfunction
  • MAF sensor/IAT sensor No. 1 connector or terminals malfunction
  • MAP sensor/IAT sensor No. 2 loose
  • MAF sensor/IAT sensor No. 1 loose
  • PCM connector or terminals malfunction
  • MAP sensor malfunction
  • MAF sensor malfunction
  • Air leakage from intake-air system
  • Purge solenoid valve malfunction
  • PCV valve malfunction
  • PCM malfunction
SYSTEM WIRING DIAGRAM
  • Not applicable
CAUTION:
  • Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
PARTS DESCRIPTION

Item Definition Unit Condition/Specification
ECT Engine coolant temperature input from ECT sensor °C, °F
  • Displays ECT
ECT sensor voltage V
  • ECT is 20 °C {68 °F}: Approx. 3.10 V
  • ECT is 40 °C {104 °F}: Approx. 2.16 V
  • ECT is 60 °C {140 °F}: Approx. 1.40 V
  • ECT is 80 °C {176 °F}: Approx. 0.87 V
  • ECT is 100 °C {212 °F}: Approx. 0.54 V
MAF Mass air flow input from MAF sensor g/Sec
  • Displays MAF
MAF sensor voltage V
  • Ignition switched ON (engine off) (MAF: 0.59 g/s {0.078 lb/min}): Approx. 0.72 V
  • Idle (after warm up) (MAF: 3.79 g/s {0.501 lb/min}): Approx. 0.93 V
  • Racing (engine speed is 2, 000 rpm) (MAF: 6.96 g/s {0.921 lb/min}): Approx. 1.11 V
MAP Manifold absolute pressure input from MAP sensor KPa {MPA}, mBar {BAR}, psi, in H20
  • Displays MAP
MAP_V MAP sensor voltage V
  • Ignition switched ON (engine off) (MAP:100 kPa {1.02 kgf/cm2 , 14.5 psi}): Approx. 4.04 V
  • Idle (after warm up) (MAP: 35 kPa {0.36 kgf/cm2 , 5.1 psi}): Approx. 1.40 V
  • Racing (engine speed is 2, 000 rpm) (MAP: 26 kPa {0.27 kgf/cm2 , 3.8 psi}): Approx. 1.01 V
RPM Engine speed RPM
  • Displays engine speed
TP_REL Throttle valve opening angle (relative value) with value at throttle valve fully close timing as the start point %
  • Accelerator pedal released: Approx. 12%
  • Accelerator pedal fully depressed: Approx. 82%
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