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

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.