JLG 660SJ:
JLG 660SJ error code

Hello,
I have an aerial work platform with the error code below, can anyone help me with this?

*(437) engine troublecode 171:12

Machine:
JLG, 660SJ, 0300152492

Engine:
Deutz, D2011L04, nr. 11133411 , enginecode C30I336D
  • Posted 21 Oct 2023 00:52
  • Discussion started by Forklift123
  • Netherlands
Mechanic of Forklifts, Aerial platforms & telehandlers in the Netherlands
Showing items 1 - 2 of 2 results.
fault 171:12
control unit hardware fault
Internal temperature for control unit not in permissible range
does the fault clear when you shut down and restart?
the suggestion says to shut it down and restart it and it should start up normal but if problem reoccurs to call Deutz service.
It almost sounds like a faulty temp sensor or wiring.
Also check the fan belt and make sure it is not loose.
It doesn't specifically say but another possibility could be the engine controller is getting hot.
That's the trouble with the service literature, sometimes it isn't very specific.
  • Posted 22 Oct 2023 14:22
  • Modified 22 Oct 2023 14:25 by poster
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Yikes!...sounds like broken or bad canbus wire from engine to control module
  • Posted 21 Oct 2023 02:36
  • Reply by Matthew_Reed
  • New York, United States

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