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Q: Getting codes for misfires and a failed heat sensor

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My car is misfiring and giving me codes P0171, P1155, and P0302. In addition I am getting code P1150 for a failed heat sensor.

A: The codes listed indicate that your vehicle...

The codes listed indicate that your vehicle is running lean, and that there is a problem with the air fuel ratio sensor's signal and heater circuit. These are probably related to the misfire that you are experiencing. I would recommend having a professional technician test your engine's misfire and repair or replace your air/fuel ratio sensor as necessary.

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