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Home >> Subaru >> 2016 >> WRX STI Limited >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0030 A/F/O2 Heater Control Circuit Bank 1 Sensor 1 >> Diagnostic Method
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Diagnostic Method

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
Front oxygen (A/F) sensor impedance > 35 Ω

Time Needed for Diagnosis:  10000 ms

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