DTC P0101:00: Notes

DTC P0101:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

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 manifold absolute pressure, boost air temperature, intake air temperature, EGR position, purge flow rate and variable valve timing). MONITORING CONDITIONS Engine speed: 500-4, 500 rpm Barometric pressure: 0-180 kPa {0-1.83 kgf/cm ² , 0-26.1 psi} Throttle position-throttle position before 25 ms: below 1.22% (boost air temperature less than 20°C {68°F}), below 10% (boost air temperature more than 20°C {68°F}) Battery voltage: above 8 V If over a period continuing for 5 s , the differential value between the actual intake airflow amount and the estimated intake airflow amount is more than specified value, the PCM determines that the detected mass air flow amount is too high. If over a period continuing for 5 s , the differential value between the actual intake airflow amount and the estimated intake airflow amount is less than specified value, the PCM determines that the detected mass air flow amount is too low. Diagnostic support note This is a continuous monitor (CCM). The MIL 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.
POSSIBLE CAUSE	Air restriction or leakage in intake-air system (between MAF sensor and intake manifold) MAF sensor malfunction Turbocharger malfunction (turbine wheel/compressor damaged, stuck) MAF/IAT sensor connector or terminals malfunction Electrical corrosion in MAF/IAT RETURN circuit Voltage drops in ground circuit PCM connector or terminals malfunction PCM malfunction

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 manifold absolute pressure, boost air temperature, intake air temperature, EGR position, purge flow rate and variable valve timing).
MONITORING CONDITIONS
- Engine speed: 500-4, 500 rpm
- Barometric pressure: 0-180 kPa {0-1.83 kgf/cm ² , 0-26.1 psi}
- Throttle position-throttle position before 25 ms: below 1.22% (boost air temperature less than 20°C {68°F}), below 10% (boost air temperature more than 20°C {68°F})
- Battery voltage: above 8 V
If over a period continuing for 5 s , the differential value between the actual intake airflow amount and the estimated intake airflow amount is more than specified value, the PCM determines that the detected mass air flow amount is too high.
If over a period continuing for 5 s , the differential value between the actual intake airflow amount and the estimated intake airflow amount is less than specified value, the PCM determines that the detected mass air flow amount is too low.

Diagnostic support note

This is a continuous monitor (CCM).
The MIL 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.

POSSIBLE CAUSE

Air restriction or leakage in intake-air system (between MAF sensor and intake manifold)
MAF sensor malfunction
Turbocharger malfunction (turbine wheel/compressor damaged, stuck)
MAF/IAT sensor connector or terminals malfunction
Electrical corrosion in MAF/IAT RETURN circuit
Voltage drops in ground circuit
PCM connector or terminals malfunction
PCM malfunction