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Home › Mazda › 2013 › CX-5 Touring, AWD › Repair and Diagnosis › Engine Performance › System › On-Board Diagnostic (Engine Controls) (1 Of 4) › DTC P0101-00: MAF Sensor Circuit Range/Performance Problem › Notes

DTC P0101-00: MAF Sensor Circuit Range/Performance Problem: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0101:00 MAF sensor circuit range/performance problem
DETECTION CONDITION 
  • When the conditions are as follows, the PCM compares the intake airflow amount with the estimated intake airflow amount (calculated from the barometric pressure, MAP sensor and throttle opening angle).

    MONITORING CONDITIONS 

    • Engine speed: above 500 rpm 
    • Intake manifold absolute pressure divided by barometric pressure: below 0.93 
    • Throttle position (before 0.02 s): below 10 % 
    • Amount of fluctuation in intake camshaft position for 0.04 s: below 10°CA 
    • Battery voltage: above 8 V 
  • 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 (Mode 2)/Snapshot data is available.
  • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION  -
POSSIBLE CAUSE 
  • MAP sensor/IAT sensor No.2 connector or terminals malfunction
  • MAF sensor/IAT sensor No. 1 connector or terminals malfunction
  • 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  -
CAUTION:
  • Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
RELATED PIDS

Monitor item (Definition) Unit/Condition Condition/Specification (Reference)
ECT °C, °F
  • Displays the ECT
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 
ECT2_V 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 
TP REL %
  • Accelerator pedal released: approx. 12 % 
  • Accelerator pedal depressed: approx. 82 % 
RPM RPM
  • Displays the engine speed
MAP KPa {MPa}, mBar {Bar}, psi, in H20
  • Displays the MAP
V
  • Switch the ignition to ON (MAP:101 kPa {1.03 kgf/cm 2  , 14.6 psi}): approx. 4.07 V 
  • Idle (after warm up) (MAP: 33 kPa {0.34 kgf/cm 2  , 4.8 psi}): approx. 1.34 V 
  • Racing (engine speed is 2,000 rpm) (MAP: 26 kPa {0.27 kgf/cm 2  , 3.8 psi}): approx. 1.05 V 
MAF g/sec
  • Displays the MAF
V
  • Switch the ignition to ON (MAF: 0.59 g/s {0.078 lb/min}): approx. 0.72 V 
  • Idle (after warm up) (MAF: 2.17 g/s {0.287 lb/min}): approx. 0.86 V 
  • Racing (engine speed is 2,000 rpm) (MAF: 4.73 g/s {0.626 lb/min}): approx. 1.07 V 
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