Kohler 5CE Problem

Discussion in 'Electrical Stuff' started by Captain Morgan, May 2, 2011.

  1. Vince_nj1

    Vince_nj1 Active Member TECHNICAL Contributor

    Aug 25, 2008
    North Barnegat Bay
    2006 320 V-Drives 6.2s, Bow Thruster, Generator, Raymarine C80, Radar, Fish Finder
    6.2 Horizons 320HP
    I was having problems with my generator a few years ago. I was getting an EC72 error. Chris in Texas tipped me off that the a potential problem with the main power relay. I spoked to Kohler and they confirmed there were some problems with the relay. I purchased a relay for about $5.00 and installed it myself. My problems went away. The relay is about 1inch square that looks like small black fuse block that you would plug into a fuse panel on your car. It sitst behind the control panel.


    Looks like this (this is not the actual Kohler relay)
    18-5705_2.jpg


    Re: Kohler 5ecd Generator shuts down - EC72
    Hello All,

    Just to let you know I have had the EC72 on a reoccurring basis. Would run then stop suddenly and show EC72. Would clear it and restart after a while would do it again. Kept progressively getting quicker and quicker to the point it wouldn't start, would try to start but then show EC72 right away.

    1st fix by Kohler guys was to replace the K5 Main power relay. From the factory it was a cheap made in china no-name 30A relay. Was replaced by Bosch relay. The reason was the relay contacts were getting burnt and carbon build up on it, and wasn't getting power to the ECU on the back of the genny, it also started affecting the fuel pump at the end.

    The 2nd time I got the EC72 about 5 months later, it was narrowed down to the 120 Ohm resister on the CAN bus, located closest to the front starboard side of the genny. A new resister was soldered into place and has worked like a champ ever since.

    Hope this helps,
    Chris

     
  2. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    Vince - is yours a 5E or a 5CE?
     
  3. Vince_nj1

    Vince_nj1 Active Member TECHNICAL Contributor

    Aug 25, 2008
    North Barnegat Bay
    2006 320 V-Drives 6.2s, Bow Thruster, Generator, Raymarine C80, Radar, Fish Finder
    6.2 Horizons 320HP
    Not sure. I zoomed in on my PC and it looks like it is a 5ECD ? Can you tell from the pic?



    [​IMG][/QUOTE]
     
  4. Stray Cat

    Stray Cat Active Member TECHNICAL Contributor

    Oct 4, 2006
    Pool 10 Guttenberg, IA
    2006 300DA Sundancer
    350 Mags / Bravo III
    looks like a 5ECD to me, my 2006 5E doesn't have the LED display
     
  5. ajaymuch

    ajaymuch New Member

    14
    Jul 6, 2007
    michigan
    2006 40' Sundancer
    8.1 Liter HO 420 hp gas
    Hi Chris I have same problem with my genny. Where did you order the k5 relay and the 120 ohm resistor? Thanks very much!
     

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