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Home >> Subaru >> 2005 >> Baja Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0420 - Catalyst System Efficiency Below Threshold (Bank 1) - >> Diagnostic Method >> Judgment Value
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Judgment Value

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Accumulated variation of output Voltage of rear oxygen sensor per 50 milliseconds divided by accumulated Variation of output voltage of front lambda sensor per 50 milliseconds >/= 1.4

Time Needed for Diagnosis:  45 seconds

Malfunction Indicator Light Illumination:  2 continuous driving cycles.