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P1170 Diagnostic Trouble Code Discussion for January 2012

Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit No Inversion

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Trouble Ticket Help Requests for DTC P1170
Help Request Posted
1998 Mazda Protege DX 1.5L Excessive Emissions, MIL Lamp on VIN: JM1BC1410W
P1170: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit - No Inversion. This protege came to us failing state emissions with very high CO. Sitting at idle CO is 9%. Oxygen sensor reads rich and fuel trims are -25. If we induce a misfire or start the vehicle in clear flood mode fuel control will be good. When the vehicle is running...
January 26, 2012