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Home >> Subaru >> 2021 >> Crosstrek Sport >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (Engine Control System (HEV) (Diagnostics) (4 Of 4)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P219C: Cylinder 1 Air-Fuel Ratio Imbalance >> General Description >> Outline Of Diagnosis >> Individual Cylinder STFT (iSTFT n (k))

Individual Cylinder STFT (iSTFT n (k))

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Individual cylinder STFT (= iSTFT n (k)) are calculated by integral control and individual cylinder λ

deviation u(k) converges to target (no deviation).

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