Alright i got a code the other day when i ran my computer P-0171. The description was "System to lean bank 1". Could this mean my o2 sensor is going bad. I know i shouldn't be running lean after i got tuned not too long ago. I need to get my inspection done this month and im not ready for that yet. Anyone know what could cause this code to pop up?

 

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Fuel Trims

- Bryan