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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0459 Evaporative Emission System Purge Control Valve Circuit High >> Diagnostic Method

Diagnostic Method

Judge as NG when the malfunction criteria below are met.

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Continuous time with the following conditions established: ≥ 2.5 sec.
Duty ratio of "ON" ≥ 25%
Terminal output voltage High

Time Needed for Diagnosis:  2.5 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

Judge as OK and clear the NG when the malfunction criteria below are met.

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Terminal output voltage Low