Satnav display. Navigation data are invalid what's wrong

It wouldn't be a ground problem If it were the whole instrument cluster would be dead . Checking the BCM an the IPC for DTC'S - diagnostic trouble codes is the proper way to diagnose this type problem . Not worrying about grounds .
Odometer
The vehicle odometer is calculated and stored electronically in the body control module (BCM) and is sent via the serial data circuit to the instrument panel cluster (IPC) for display. The BCM calculates and stores the mileage based on the vehicle speed serial data information from the PCM/ECM. The IPC displays the season odometer information from the BCM in the driver information center (DIC). The odometer will display error if the IPC detects an invalid odometer data from the BCM. After an invalid odometer data is received from the BCM, the IPC will display the last known odometer reading for 1.5 seconds before error is displayed in the DIC.
Speedometer
The instrument panel cluster (IPC) displays the vehicle speed based on serial data message from the body control module (BCM). The BCM receives vehicle speed data from the PCM/ECM via the serial data circuit. The speedometer will default to 0 km/h (0 mph) if:
• The PCM/ECM detects a malfunction in the vehicle speed sensor circuit.
• The BCM detects a loss of serial data communications with the PCM/ECM.
• The IPC detects a loss of serial data communications with the BCM.

Your best bet would be to take it to the dealer !

update maps and navigation.

http://www.gpsnavigationdvd.net/honda-navigation-dvd-system-updates

U1000 SCP (J1850) Invalid or Missing Data for Primary Id U1001 SCP (J1850) Invalid or Missing Data for Primary Id U1002 SCP (J1850) Invalid or Missing Data for Primary Id U1003 SCP (J1850) Invalid or Missing Data for Primary Id U1004 SCP (J1850) Invalid or Missing Data for EEC Programming U1005 SCP (J1850) Invalid or Missing Data for EEC Programming U1006 SCP (J1850) Invalid or Missing Data for Primary Id U1007 SCP (J1850) Invalid or Missing Data for Primary Id U1008 SCP (J1850) Invalid or Missing Data for Engine Torque U1009 SCP (J1850) Invalid or Missing Data for Engine Torque U1010 SCP (J1850) Invalid or Missing Data for Engine Air Intake U1011 SCP (J1850) Invalid or Missing Data for Engine Air Intake U1012 SCP (J1850) Invalid or Missing Data for Primary Id U1013 SCP (J1850) Invalid or Missing Data for Primary Id U1014 SCP (J1850) Invalid or Missing Data for Primary Id U1015 SCP (J1850) Invalid or Missing Data for Primary Id U1016 SCP (J1850) Invalid or Missing Data for Primary Id U1017 SCP (J1850) Invalid or Missing Data for Primary Id U1018 SCP (J1850) Invalid or Missing Data for Throttle U1019 SCP (J1850) Invalid or Missing Data for Throttle U1020 SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch U1021 SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch U1022 SCP (J1850) Invalid or Missing Data for Primary Id U1023 SCP (J1850) Invalid or Missing Data for Primary Id U1024 SCP (J1850) Invalid or Missing Data for Primary Id U1025 SCP (J1850) Invalid or Missing Data for Primary Id U1026 SCP (J1850) Invalid or Missing Data for Engine RPM U1027 SCP (J1850) Invalid or Missing Data for Engine RPM U1028 SCP (J1850) Invalid or Missing Data for Primary Id U1029 SCP (J1850) Invalid or Missing Data for Primary Id U1030 SCP (J1850) Invalid or Missing Data for Experimental #1 U1031 SCP (J1850) Invalid or Missing Data for Experimental #1 U1032 SCP (J1850) Invalid or Missing Data for Primary Id U1033 SCP (J1850) Invalid or Missing Data for Primary Id U1034 SCP (J1850) Invalid or Missing Data for Primary Id U1035 SCP (J1850) Invalid or Missing Data for Primary Id U1036 SCP (J1850) Invalid or Missing Data for Wheels U1037 SCP (J1850) Invalid or Missing Data for Wheels U1038 SCP (J1850) Invalid or Missing Data for Primary Id U1039 SCP (J1850) Invalid or Missing Data for Primary Id / Vehicle Speed U1040 SCP (J1850) Invalid or Missing Data for Vehicle Speed U1041 SCP (J1850) Invalid or Missing Data for Vehicle Speed U1042 SCP (J1850) Invalid or Missing Data for Traction Control U1043 SCP (J1850) Invalid or Missing Data for Traction Control U1044 SCP (J1850) Invalid or Missing Data for Traction Motor U1045 SCP (J1850) Invalid or Missing Data for Traction Motor U1046 SCP (J1850) Invalid or Missing Data for Primary Id U1047 SCP (J1850) Invalid or Missing Data for Primary Id U1048 SCP (J1850) Invalid or Missing Data for Primary Id U1049 SCP (J1850) Invalid or Missing Data for Primary Id U1050 SCP (J1850) Invalid or Missing Data for Brakes

Hello, unfortunately you will have to have it checked by the experts as there could be quite a few possibilities for the cause. The only one simple fix that comes to mind is that the screen earth wire is no longer contacting firmly. But that is a 30% chance. Even then you would have to loosen quite a few items to check for that.If you are confident enough to try it, then do so, otherwise.. leave it to the knowing.
Have a good day.

it sounds like you had a disruption in power and it may need to be reintroduced to the car with a diagnostic computer.

Setting ---> Navigation options----> rotate map in direction of travel.
If this option is not available then you need to update navigation software.

02261 Data Medium (CD/DVD) faulty for satnav
dont recognise the 01207 suspect it will be related to the satnav

have you tryed your sony help line?

the satnav/radio has to be ON for 3 hours without any action. I am not sure, if it has to be 3 hours consequently, so 3 hours the engine and satnav on, or it could be for example 6 halfhours, I dont rememmber, but I had this exact problem with 2005 audi allroad. The safe characters will change after 3 hours to rotating numbers and you will be able to enter the code.
DOnt bother to go to the service station, all they can do is also wait or completely reset the unit, which is very pricey, because they have to remove the backpanel..
Be patient, dont touch the satnav let it on, its really a long timespan but it works.