Depending on the length of time the power was interrupted, your system may require GPS initialization.

If initialization is not necessary, the system proceeds directly to the Startup Confirmation screen.
If the system fails to locate a sufficient number of satellites to locate your position within 10 minutes, the following screen is displayed.

If you are experiencing GPS reception problems:
Anti-lock Brakes (ABS)
The anti-lock brake system (ABS) helps prevent the wheels from locking up, and
helps you retain steering control by pumping the brakes rapidly, much faster than
a person can do it.
The electronic ...
CKP Sensor Replacement
Raise the vehicle on a lift.
NOTE: Make sure the vehicle is level, because engine oil will drip out
when you remove the sensor.
Loosen the bolt (A). Remove the bolt (B) and ...
Modifications
Do not modify your vehicle or use non-Honda components that can affect its
handling, stability, and reliability.
Overall vehicle performance can be affected. Always make sure all equipment is
pro ...