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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Engine Control System (4GR-FSE) - Diagnostic Codes (2 Of 5)) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2) [04/2013 - 08/2015] >> Wiring Diagram

DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2) [04/2013 - 08/2015]: Wiring Diagram

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.

Refer to DTC P0102 for the mass air flow meter sub-assembly circuit.

Refer to WIRING DIAGRAM , or refer to WIRING DIAGRAM

Refer to DTC P2195 for the air fuel ratio sensor circuit.

Refer to WIRING DIAGRAM

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