Does a car's error codes reset if the correct part is installed?

Mike G

New member
I recently took my wifes car to an AutoZone to get a diagnostics test. The problem is that the description is strange: "Error code p0031: Heated Oxygen Sensor- bank 1 sensor 1"

The error code (P0031) and location (bank 1 sensor 1) refer to the A/F Ratio Sensor in the service and repair manual, but the actual "Heated Oxygen Sensor" is in a completely different location (its actually refered to as the Heated Oxygen Sensor 2 in the manual).

So I dont want to have to buy two parts, and risk a restocking fee. If I buy the A/F Ratio Sensor, will the Check Engine light turn off if I installed the correct part?
 
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