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P0140 Diagnostic Trouble Code Discussion for December 2010

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
2004 Kia Spectra 1.8L MIL Lamp on VIN: KNAFE12184
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) No Activity Detected. This Kia has a P1166 code even after both oxygen senors were replaced. I have fuel trim scan data at -7.4. Injector pulse width of .9ms to 1.3ms. Mass Air flow reading at idle is 5-7Kg/h. I have not checked fuel pressure. I did find that if I pinch off the eva...
December 20, 2010