Error and Warning Messages
Error Message
Cause
Autopilot Action
Autopilot ECU Voltage is
Low
The pump supply voltage has fallen below
10 Vdc for longer than 6 seconds.
Alarm sounds for 5 seconds
Continues in normal operation
Autopilot is not receiving
navigation data. Autopilot
will hold the current heading.
The autopilot is no longer receiving valid
navigation data while performing a Route
To maneuver.
This message also appears if navigation
is stopped on a chartplotter before the
autopilot is disengaged.
Alarm sounds for 5 seconds
Autopilot transitions to heading
hold
Connection with Autopilot
Lost
The helm control has lost connection with
the CCU.
N/A
Autopilot Lost Wind Data
(sailboat only)
The autopilot is no longer receiving valid
wind data.
Alarm sounds for 5 seconds
Autopilot transitions to heading
hold
Autopilot ECU High Voltage
The pump supply voltage has risen above
33.5 Vdc.
Alarm sounds for 5 seconds
The ECU shuts down
Autopilot ECU Voltage has
Dropped Rapidly
The ECU voltage has dropped quickly
below 7.0 Vdc.
Alarm sounds for 5 seconds
The error is cleared when the ECU
voltage rises above 7.3 Vdc.
Autopilot ECU High Temper
ature
The ECU temperature has risen above
100°C (212°F ).
Alarm sounds for 5 seconds
The ECU shuts down
Error: Lost communication
between ECU and CCU
(when the autopilot is
engaged)
Communication between the CCU and the
ECU has timed out.
The helm control or chartplotter
beeps, and the autopilot transi
tions to standby.
Contacting Garmin Support
• Go to
for help and information, such as product manuals, frequently asked questions,
videos, and customer support.
• In the USA, call 913-397-8200 or 1-800-800-1020.
• In the UK, call 0808 238 0000.
• In Europe, call +44 (0) 870 850 1241.
© 2022 Garmin Ltd. or its subsidiaries
Garmin
®
and the Garmin logo are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. Reactor
™
and Shadow Drive
™
are trademarks of
Garmin Ltd. or its subsidiaries. These trademarks may not be used without the express permission of Garmin.
NMEA 2000
®
and the NMEA 2000 logo are trademarks of the National Marine Electronics Association.
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