Thread Tools Search this Thread Display Modes
Old 11-14-2019, 01:11 AM   #1
Winnebago Owner
Join Date: Apr 2016
Posts: 97
Onan fault code 14 help/suggestions

Our generator is acting up. It's an Onan/Cummins 5.5 Model HGJAB Spec. K, 3+ y/o and 217 hours. No previous issues - none - ever. It is throwing a fault code 14. Unfortunately it appears that fault code 14 is short for we don't know what's actually wrong, try these 15+ things to see if it fixes it. Ugh!

Unfortunately, the problem cropped up immediately after the dealer replaced the ATS. While this is certainly suspect, I can see where it could also be coincidental. Just wanted to put all of the facts out there.

The exact problem is that when it's operating under load and the last load is shut off, the generator shuts off. This is happening because the Herts (Hz) of the generator is going out of an acceptable range. In this case, I believe it's above 66 Hz. It's a safety feature to protect both the generator and any voltage sensitive appliances.

Since the vast majority of the "fixes" are beyond my diagnostic and tool (meter) lacking abilities, it's at the shop. After much diagnostics, they adjusted the throttle stop. They thought they had it fixed, but when I went to pick it up, we (wisely) tested it and it did the same thing again. The tech had his meter hooked up so he knows exactly what it did.

So, since the next option appears to be replacing a $600 "control board", with no guarantee it's going to fix the problem, I'm looking for suggestions, thoughts, links etc. I've been able to find some older posts on line, just wondering if there is something newer out there.

BTW, I called Cummins and the extent of their help was a friendly voice and to ship me the diagnostic procedure.

Any information is appreciated.
2015 Itasca Sunstar 35F
Upinsmoke is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
2003 Cummins ISC-350HP "CAPS" FUEL PUMP FAILURE (Fault Codes 277, 539, 111) imnprsd General Maintenance and Repair 6 10-27-2019 12:57 AM
Norcold 3150 Fault code ajbettencour Heating, Cooling and Appliances 0 10-02-2019 09:40 AM
Fault Code retrieval Denis N Winnebago Class A Motorhomes 2 05-26-2018 05:59 PM
Norcold Fault Code LI **oP TheToads Heating, Cooling and Appliances 8 01-08-2014 05:37 PM
Fault connector location '04 Winnebago Sightseer 30B Agapemou Winnebago Class A Motorhomes 6 07-02-2013 02:58 PM

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 08:32 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.