DTC P0101 Mass Air Flow Circuit Range/Performance (4JJ3 with DPD)

1. DTC P0101 description

The MAF sensor is an air flow meter that measures the amount of air that enters the engine. It is installed between the air cleaner and the turbocharger. When the amount of air entering the engine is small, it indicates deceleration or idling speed. When the amount of air entering the engine is large, it indicates acceleration or a high load state. The ECM calculates a predicted MAF value and compares the actual MAF sensor voltage signal to the predicted MAF value. This comparison determines if the signal is stuck, or is too low or too high for a particular operating condition. If the ECM detects that the actual MAF sensor signal voltage is not within the predetermined range of the calculated MAF predicted value, the DTC is set.

2. Condition for setting DTC P0101

Condition for running the DTC

  • DTCs P003A, P0045, P0048, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0122, P0123, P0234, P0241, P0242, P0403, P060B, P0638, P0641, P0651, P06D2, P2227, P2228, P2229, U0074, U010A, and U0110 are not set.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P003A Turbocharger Boost Control Solenoid Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0045 Turbocharger Boost Control Solenoid Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0048 Turbocharger Control Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0102 Mass Air Flow Circuit Low Input".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0103 Mass Air Flow Circuit High Input".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0112 Intake Air Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0113 Intake Air Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0116 Engine Coolant Temperature Sensor Circuit Range/Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0117 Engine Coolant Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0118 Engine Coolant Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0122 Throttle Position Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0123 Throttle Position Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0234 Turbocharger Overboost Condition".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0241 Turbocharger Boost Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0242 Turbocharger Boost Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0403 Exhaust Gas Recirculation (EGR) Motor Control Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P060B Internal Control Module A/D Processing Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0638 Throttle Actuator Control Range/Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0641 Sensor Reference Voltage 1 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0651 Sensor Reference Voltage 2 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P06D2 Sensor Reference Voltage 5 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2227 Barometric Pressure Circuit Range/Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2228 Barometric Pressure Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2229 Barometric Pressure Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U0074 Control Module Communication Bus Off - Local CAN".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U010A Lost Communication With Exhaust Gas Recirculation (EGR) Control Module".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U0110 Lost Communication with VNT System".

Also, the following are met for 3 seconds or more:

  • The battery voltage is 10 to 16 V.
  • The ignition switch is ON.
  • The intake air temperature is 110°C {230 °F} or less.
  • The engine coolant temperature is 30 to 110°C {86 to 230°F}.
  • The engine speed is 900 to 2300 rpm.
  • The EGR control is commanded OFF.
  • The air intake throttle control is commanded OFF.
  • The fuel injection control is commanded OFF.
  • The accelerator pedal is not depressed.
  • The engine run time is 5 seconds or more.

Condition for setting the DTC

  • The ECM detects that the MAF sensor signal voltage is not within the predetermined range for the calculated predicted MAF value.

3. Action taken when DTC P0101 sets

  • The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

4. Condition for clearing DTC P0101

  • Refer to Conditions for clearing the MIL/DTC - Type A or Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

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