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Home >> Mazda >> 2003 >> MX-5 Miata Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0101: Mass Airflow Sensor Circuit Range Performance Malfunction >> Detection Condition

Detection Condition

DTC is set when PCM compares actual input signal from Mass Airflow (MAF) sensor with expected input signal from MAF sensor which PCM calculates by engine speed. If mass intake-airflow amount is more than 9.88 lb./min (74.7 grams/sec) for 5 seconds and engine speed is less than 2000 RPM with engine running, PCM determines that detected mass intake-airflow amount is too high. If mass intake-airflow amount is less than 0.70 lb/min (5.3 grams/sec) for 5 seconds and engine speed is more than 500 RPM with engine running, PCM determines that detected mass intake-airflow amount is too low. MIL is illuminated when PCM detects malfunction condition in 2 consecutive drive cycles. Pending codes is available if PCM detects malfunction condition during first drive cycle. Freeze Frame Data is available and DTC will store in PCM memory.

Monitoring Condition

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