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Home >> Subaru >> 2021 >> WRX Premium, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.0L) (1 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0134: A/F/02 Sensor Circuit No Activity Detected Bank 1 Sensor 1 >> Execution Condition
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Execution Condition

Secondary parameters Execution condition
Input voltage (+)
Battery voltage
≥ 10.9 V
Front oxygen (A/F) sensor impedance > 403 Ω
Sensor reference voltage
Battery voltage
≥ 10.9 V
Front oxygen (A/F) senso impedance ≥ 403 Ω
Input current
Battery voltage
Front oxygen (A/F) sensor impedance
≥ 10.9 V
≤ 403 Ω