No, it’s not an error.
KMEM 230853Z AUTO 18014G18KT 10SM CLR 16/M02 A3008 RMK AO2 SLP117 T01561022 TSNO $
The ‘$’ means the weather stations needs maintenance. Can you trust the METAR when it’s like this? Not necessarily. It is likely that some of sensors that record the measurements are not functioning properly, while the others are working correctly.
