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Home >> Toyota >> 2014 >> Corolla LE Eco Plus >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Control System (2ZR-FE) - Diagnostic Codes (6 Of 7) (Model Code: ZRE172)) >> SFI System >> DTC P0102: Mass Air Flow Circuit Low; DTC P0103: Mass Air Flow Circuit High [08/2013 - 08/2016] >> Monitor Description
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Monitor Description

WARNING: This page is about a different variant/trim than selected.

If there is a defect or an open or short circuit in the mass air flow meter sub-assembly, the voltage level deviates from the normal operating range. The ECM interprets this deviation as a malfunction in the mass air flow meter sub-assembly circuit and stores a DTC.

Example:

When the sensor output voltage remains less than 0.2 V, or higher than 4.9 V for 3 seconds, the ECM stores a DTC.