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Home >> Lexus >> 2002 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0100: Mass Airflow (MAF) Sensor Circuit >> Circuit Description

Circuit Description

MAF sensor uses a platinum hot wire maintained at a constant temperature. Airflow past sensor affects temperature and current flow through sensor. DTC P0100 is set when ECM detects an open or short circuit for 3 seconds, with engine speed around 4000 RPM. Possible causes are:

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