MAF Airflow Sensor/Code P0171

Salutations Subaru friends,

2015 Crosstrek with about 42,000 miles, bought in November at 40k

Friday morning my CEL came on, took it to Autozone, got the code read and it came back as code P0171-Engine running lean/Mass Airflow Sensor issue. I disconnected the battery, pulled the sensor, cleaned it and put it back in. On startup, the check engine light was gone and hasn’t come back.

Do you think it’s still worth taking to the shop for a proper look? I have noticed my fuel economy going down a little bit but it could also be that I’m driving less frequently due to weather. Any advice would be appreciated

TL;DR: CEL on, running lean. Cleaned MAF, code gone. Worth a visit to the shop?