Garmin GPS 175 Pilot's Manual page 226

Messages
ADVISORY
<Name> log
encountered an
error when
exporting.
<Name> log has
exported
successfully.
Heading source
inoperative or
connection lost.
Pressure altitude
source inoperative
or connection lost.
Press "Enable APR
Output" before
selecting APR on
autopilot.
ADS-B Out fault.
Pressure altitude
source inoperative
or connection lost.
6-12
CONDITION
Export failure. May occur
for WAAS or traffic logs.
Export to SD card
successful. May occur for
WAAS or traffic logs.
<Unit> is not receiving
heading information
from any source.
Heading up map
orientation not available.
<Unit> is not receiving
pressure altitude data
from any source.
Approach guidance is
available from the
connected
KAP 140/KFC 225
autopilot.
For GNX 375, or
GPS 175 configured to
receive ADS-B In data
from GTX 345:
Transponder loses
communication with the
pressure altitude source.
GPS 175/GNX 375 Pilot's Guide
CORRECTIVE ACTION
1. Reformat the SD card
using an external
computer.
2. Re-insert the SD card in
the slot.
3. Contact dealer if the
problem persists.
No action necessary.
Contact dealer for service.
Contact dealer for service.
Before engaging approach
mode on the autopilot, tap
the Enable APR Output key.
Contact dealer for service.
190-02207-02 Rev. B