What does a Service A 123 -1630 mean in a 2009 honda accord

SOURCE: honda accord 2006 and is showing A service -11

mantince reminder light take it to a shop

SOURCE: honda accord 2007 service code A23 what does this

Code 23 is the knock sensor,but this does not mean the sensor is faulty,could be picking up a knocking in your engine.Check oil level and oil pressure.Check wiring to the ecu from the sensor.