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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Engine Control System (Diagnostics) (HEV) (2 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0172: System Too Rich Bank 1 >> General Description >> Diagnostic Method

Diagnostic Method

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

Compare the diagnostic value with the threshold value, and if a condition meeting the criteria continues for 10s x 3time(s) or more, judge that there is a fault in the fuel system.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Offset amount of main feedback compensation Less than value of Map
MAP SPECIFICATION

Warm-up increase compensation coefficient 0.000 0.100 0.200 0.300 0.400 0.521
Threshold Value 0.7 0.61 0.53 0.47 0.41 0.35

Time needed for diagnosis:  10s x 3time(s)

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

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