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Home >> Subaru >> 2016 >> WRX Premium, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (WRX) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P2196 A/F/O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 >> Diagnostic Method
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

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
λ value > 1.15
Rear oxygen sensor voltage value ≥ 550 mV

Time Needed for Diagnosis:  10000 ms

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