Join Now
International Automotive Technicians Network

P1130 Diagnostic Trouble Code Discussion for January 2010

Heated Oxygen Sensor (HO2S-12/HO2S-13) Signal Circuit Demand Changing


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 P1130
Help Request Posted
2001 Toyota Highlander 3.0L Excessive Emissions, Misfire VIN: JTEHF21A91
P1130: Air Fuel Ratio Sensor (Bank 1 Sensor 1) Circuit Malfunction. I've dealt with this code on Toyotas before, this engine utilizes air/fuel sensors, not o2 sensors, but what puzzles me is why the lean codes when the engine is obviously running rich? I mean it has black sooty plugs that were replaced a week ago and already h...
January 06, 2010
2001 Toyota Highlander 3.0L Excessive Emissions, Misfire VIN: JTEHF21A91
P1130: Air Fuel Ratio Sensor (Bank 1 Sensor 1) Circuit Malfunction. I've dealt with this code on Toyotas before, this engine utilizes air/fuel sensors, not o2 sensors, but what puzzles me is why the lean codes when the engine is obviously running rich? I mean it has black sooty plugs that were replaced a week ago and already h...
January 06, 2010