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P0139 HO2S2 EC-177 < DTC/CIRCUIT DIAGNOSIS > [HR12DE (TYPE 1)] C D E F G H I J K L M A EC N P O YES >> INSPECTION END NO >> GO TO 5. 5. CHECK HEATED OXYGEN SENSOR 2-III Check the voltage between ECM harness connector terminals under the following condition. Is the inspection result normal? YES >> INSPECTION END NO >> Replace malfunctioning heated oxygen sensor 2. Refer to ECM Condition Voltage Connector + – Terminal Terminal F16 50 (HO2S2) 59 Coasting from 80 km/h (50 MPH) in 4th The voltage should be above 0.68 V at |