{"id":16826,"date":"2026-02-27T14:42:20","date_gmt":"2026-02-27T14:42:20","guid":{"rendered":"https:\/\/manuals.seakeeper.com\/ride\/seakeeper-ride-troubleshooting-guide\/fault-555-554-gps\/"},"modified":"2026-02-27T16:29:59","modified_gmt":"2026-02-27T16:29:59","slug":"fault-555-554-gps","status":"publish","type":"page","link":"https:\/\/manuals.seakeeper.com\/ride\/seakeeper-ride-troubleshooting-guide\/fault-555-554-gps\/","title":{"rendered":"Fault 555 & 554 – GPS & NMEA"},"content":{"rendered":"\n

Overview<\/h2>\n\n\n\n

Seakeeper<\/span> Ride requires a continuous, reliable GPS signal to function. The faults in this section are Seakeeper<\/span> Ride communicating that this requirement has not been met, which could have multiple causes.<\/p>\n\n\n\n

\n
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\"\"<\/figure>\n<\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

Fault 555 – LossGPSFix<\/h2>\n\n\n\n

Fault 555 indicates that Seakeeper<\/span> Ride detects connection to a valid NMEA 2000 network but does not detect a valid GPS fix (i.e., no good GPS signal is being received).<\/p>\n\n\n\n

It may be helpful to verify that the GPS is present and has a fix (good signal) according to the MFD by viewing signal strength in the GPS, Satellite, or Device settings depending on your MFD.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Causes and Solutions:<\/h4>\n\n\n\n
\n
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    \n
  1. Boat is indoors, under a bridge, or too close to other nearby large structures.<\/li>\n\n\n\n
  2. The GPS antenna is blocked by structure or has interference with equipment on the boat. This could be T-tops, bimini tops or other coverings, consoles, other equipment near the GPS, etc. <\/li>\n\n\n\n
  3. GPS antenna is defective or broken.<\/li>\n\n\n\n
  4. NMEA 2000 cable or tee is defective or broken.<\/li>\n\n\n\n
  5. Main MFD unit is mirrored to another unit causing GPS or NMEA 2000 issues.<\/li>\n<\/ol>\n<\/div>\n\n\n\n
    \n
      \n
    1. Move the boat outdoors or away from potential obstructions.<\/li>\n\n\n\n
    2. Relocate the GPS on the boat for better line of sight to the sky.<\/li>\n\n\n\n
    3. Repair or replace GPS antenna.<\/li>\n\n\n\n
    4. Replace suspect NMEA2000 cable or tee.<\/li>\n\n\n\n
    5. Restructure NMEA 2000 connection between the MFDs. Change or cancel mirroring settings.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n\n\n\n

      Fault 554 – NMEA2000Fault<\/h2>\n\n\n\n

      Fault 554 indicates that Seakeeper<\/span> Ride detects no connection to the NMEA 2000 network, and consequently, no connection to a valid GPS device.<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      Causes and Solutions:<\/h4>\n\n\n\n
      \n
      \n
        \n
      1. Cable between Software Module and NMEA 2000 network is loose or damaged.<\/li>\n\n\n\n
      2. Boat\u2019s NMEA 2000 network is not correctly assembled.<\/li>\n\n\n\n
      3. Main unit is mirrored to another unit causing GPS or NMEA2000 issues.<\/li>\n<\/ol>\n<\/div>\n\n\n\n
        \n
          \n
        1. Check cable between Software Module and NMEA 2000 network. Replace if needed.<\/li>\n\n\n\n
        2. Restore power to the boat\u2019s NMEA 2000 network.Install terminators on the ends of the boat\u2019s NMEA2000 network.<\/li>\n\n\n\n
        3. Verify Ride is visible on NMEA 2000 network. Restructure NMEA 2000 connection between the MFDs. Change or cancel mirroring settings.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n\n\n\n

          <\/p>\n","protected":false},"excerpt":{"rendered":"

          Overview Seakeeper Ride requires a continuous, reliable GPS signal to function. The faults in this section are Seakeeper Ride communicating that this requirement has not been met, which could have multiple causes. Fault 555 – LossGPSFix Fault 555 indicates that Seakeeper Ride detects connection to a valid NMEA 2000 network but does not detect a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":12326,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"manual":[292],"model":[],"document_type":[],"hidden":[],"class_list":["post-16826","page","type-page","status-publish","hentry","manual-seakeeper-ride-troubleshooting-guide"],"acf":[],"_links":{"self":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16826","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/comments?post=16826"}],"version-history":[{"count":4,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16826\/revisions"}],"predecessor-version":[{"id":16836,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16826\/revisions\/16836"}],"up":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/12326"}],"wp:attachment":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/media?parent=16826"}],"wp:term":[{"taxonomy":"manual","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/manual?post=16826"},{"taxonomy":"model","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/model?post=16826"},{"taxonomy":"document_type","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/document_type?post=16826"},{"taxonomy":"hidden","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/hidden?post=16826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}