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Home >> Subaru >> 2017 >> Legacy 3.6R Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Control System (Diagnostics) (P2101 To U1712) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P219C: Cylinder 1 Air-Fuel Ratio Imbalance >> Diagnostic Method

Diagnostic Method

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

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Imbalance value n for imbalance cylinder > 0.2
or
< -0.55 (CVT model)
> 0.23
or
< -0.55 (MT model)
Imbalance value n = i compensation value n - Average value (i compensation value n for three other 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))
 

Time needed for diagnosis:  300 time(s) (9.6 seconds)

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