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WRX Base
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Engine Control System (Diagnostics) (Except For STI) (4 Of 4)
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC P2196: A/F/O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1
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Execution Condition
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Execution Condition
Secondary parameters
Execution condition
Battery voltage
≥ 10.9 V
Main feedback
In operation
Amount of intake air
≥ 6 g/s (0.8 lb/m)
Estimated temperature of the rear oxygen sensor element
≥ 450°C (842°F)