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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Engine Control System (4GR-FSE) - Diagnostic Codes (1 Of 5)) >> SFI System >> DTC P0102: Mass Air Flow Circuit Low; DTC P0103: Mass Air Flow Circuit High; DTC P0103: Mass or Volume Air Flow Circuit High Input [06/2014 - 08/2015] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2015 Lexus IS 250 and 2014 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Inspect the fuses for circuits related to this system before performing the following procedure.

HINT: 

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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