diagnosed CODE P0103 problems listed under this code.
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2003 Toyota Matrix Question: Check Engine light
Answer #1joelburke26 from Joels Auto Service, January 03, 2011, 18:21Master
only thing my scanner shows is mass airflow sensor circuit A hight input.first i would check the connection and apply some dielectric grease on the connector.check the air filter and look in the air duct so see if anything is in the mass airflow sensor screen.