Circuit Description
WARNING: This page is about a different car, the 1995 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
Mass Airflow (MAF) sensor uses a platinum hot wire maintained at a constant temperature. Airflow past sensor affects temperature and current flow through sensor. Code is set when ECM detects an open or short circuit with engine speed of 4000 RPM or less. ECM will operate in fail-safe mode if Code P0100 is set. Possible causes are:
- MAF open or short circuit.
- MAF sensor malfunction.
- ECM malfunction.