P0139 Ford

Ford P0139 OBD-II Trouble Code Definition: P0139 HO2S Circuit Slow Response Bank 1 Sensor 2 P0139 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0139 O2 Sensor Circuit Slow Response What does the code mean? OBD-ii Code P0139 definition: This involves the rear oxygen sensor on the driver’s side. This code indicates the engine air fuel ratio […]

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