Join Now
International Automotive Technicians Network

P1170 Diagnostic Trouble Code Discussion for January 2012

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


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

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
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