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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 P2457: EGR Cooler "A" Efficiency Below Threshold >> 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
EGR gas temperature 240°C (464°F) or more

Time needed for diagnosis  : Less than 500 ms

Malfunction indicator light illumination  : Illuminates as soon as a malfunction occurs.