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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Control System (Diagnostics) (HEV) (4 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P219C: Cylinder 1 Air-Fuel Ratio Imbalance >> General Description >> Diagnostic Method

Diagnostic Method

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Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Imbalance value n for imbalance cylinder
Imbalance value n = i correction value n - average value (i correction value n of other three cylinders)
i compensation value n = Compensation value for each cylinder
Imbalance cylinder: Maximum value of cylinder (absolute value (imbalance value n))
(n: any of cylinder numbers (#1, #2, #3, #4))
More than 0.2
Or,
Less than -0.5

Time needed for diagnosis  : 300time(s)

Malfunction indicator light illumination  : Illuminates when malfunction occurs in 2 continuous driving cycles.