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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P1604: STARTABILITY Malfunction >> General Description >> Diagnostic Method

Diagnostic Method

Diagnosis 1 

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Engine speed Less than 500 rpm

Diagnosis 2 

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Engine speed Less than 300 rpm

Time needed for diagnosis 

Malfunction indicator light illumination:  Does not illuminate.