The radio reports errors using notification banners at the top of the screen. You can select View to open a diagnostics page that may help you investigate the issue.

You can select > Settings > Alerts to view current system alerts.

Check the list for additional information on certain system alerts.

System Error

A system fault has been detected.

If the error persists, contact Garmin^® support at support.garmin.com.

Receiver Error

A radio receiver fault has been detected.

If the error persists, contact Garmin support at support.garmin.com.

Transmitter Error

A radio transmitter fault has been detected.

If the error persists, contact Garmin support at support.garmin.com.

VHF Antenna Fault

The VHF antenna is not functioning correctly.

Check the connection between the radio and the antenna.

AIS position reports

The radio is not sending AIS position reports.

Look for other system alerts that may explain the reason the radio is not sending AIS position reports, such as that stealth mode is turned on or that a base station is restricting AIS traffic.

Device Power Supply

The radio detected an unusual voltage drop during the last transmission.

Check the connection between the radio and the power supply. Make sure the power supply is adequate for the radio (Specifications).

System Temperature

The radio is too hot. Some functions are disabled temporarily to prevent overheating.

Check for adequate ventilation around the metallic portion of the back of the device.

High Background Noise

The fist mic is detecting too much background noise.

Hold the fist mic closer to your mouth when transmitting, or eliminate sources of excess background noise.

VHF Antenna

The VHF antenna performance is poor.

Check the connection between the radio and the antenna. Make sure the antenna is well tuned for marine VHF and AIS. Make sure the antenna cable is rated appropriately for the antenna in use.

GPS Position

GPS position accuracy is low, or GPS position has been lost.

If using an external GPS antenna, check the connection between the radio and the GPS antenna connection. If using the internal GPS antenna, make sure there are no metallic objects near the radio that may cause interference.

No AIS Targets Detected

The AIS receiver is not detecting any AIS targets.

Check the connection between the radio and the VHF/AIS antenna.

DSC Self-Test Failure

The automated DSC system self-test has failed.

There may be an issue with the DSC system. If the error persists, contact Garmin support at support.garmin.com.

AIS Self-Test Failure

The automated AIS system self-test has failed.

There may be an issue with the AIS system. If the error persists, contact Garmin support at support.garmin.com.

AIS Quiet Mode

A base station in your area is temporarily restricting AIS transmissions.

Base stations restrict AIS transmissions from some vessel classes to prevent AIS congestion in high traffic areas. AIS transmissions resume automatically after you leave the area or the base station lifts restrictions.

GPS Antenna Fault

The GPS antenna is not functioning correctly.

Check the connection between the radio and the GPS antenna.

Fist Mic Connection

The radio has lost connection with the fist mic.

Check the fist mic power connection. Reconnect the fist mic, if necessary (Pairing a Fist Mic).

Heading Sensor

The radio has stopped receiving data from the heading sensor.

Check the connection between the radio and the NMEA 2000^® network. Check the connection between the heading sensor and the NMEA 2000 network.

Stealth Mode is Active

The radio is not transmitting AIS position reports or responding to DSC position reports because stealth mode is turned on.

Turn off stealth mode (Turning Off Position Reports).

MMSI Not Programmed

The radio cannot transmit VHF or AIS because it has not been programmed with an MMSI number.

Program the radio with an MMSI number (Programming the Radio Using the ActiveCaptain App).

Transmitter Protection

The radio was transmitting continuously for too long and was turned off automatically.

Make sure the push-to-talk (PTT) button on the fist mic is operating normally. If the error persists, contact Garmin support at support.garmin.com.