Discussion:
Code 51

Hey folks.. we have around 20 e60z's that are all coming up on 10,000 hours and code 51 seems to coming up.

most offen after a battary change.

One guy in the shop thinks its the PTC ( i call it the red advile on the line contactor ) he has had luck cooling them with safeclean and the truck starts again.

The other guy has had luck changing the line contactor.

I think the PTC is failing becasue of the line contactor failing.

Is this a problem any one else has come across?
  • Posted 16 Apr 2009 11:05
  • By Jan_Haayer
  • joined 4 Mar'09 - 18 messages
  • Nova Scotia, Canada
Showing items 1 - 8 of 8 results.
Hi Madman

You mite fine it to be the battery, it just has to be a little dirty and you can get this issue. We have had this on our units and we just change the battery and take the one that cause the problem and give it a good cleaning. Use a good cleaner /neutralizer
  • Posted 22 May 2010 06:19
  • By Techhelp
  • joined 16 Apr'10 - 22 messages
  • Wisconsin, United States
Hi Madman

You mite fine it to be the battery, it just has to be a little dirty and you can get this issue. We have had this on or units and we just change the battery and take the one that cause the problem andgive it a good cleaning. Use a good cleaner /neutralizer
  • Posted 22 May 2010 06:17
  • By Techhelp
  • joined 16 Apr'10 - 22 messages
  • Wisconsin, United States
Constant horn blowing will also heat up the capacitor and cause this problem.
  • Posted 8 Apr 2010 06:24
  • By Madman
  • joined 26 Mar'10 - 20 messages
  • North Carolina, United States
hi guys !
the ptc is there to precharge the capacitor inside the controllers (it's there to leak some voltage bypassing the contactors ) capacitor can get empty after a long period of time or after being sucked.... make sure all accesories and key switch is off when replacing batteries... unpluging the battery key switch or accessories on, you *** the capacitor.. plugging back the battery when key is on and the operator on the seat is the best way to get these error code ! hope this help
  • Posted 1 Apr 2010 12:17
  • By petel
  • joined 12 Feb'07 - 2 messages
  • Quebec, Canada
you may have a battery cell going down
  • Posted 11 Jul 2009 10:26
  • By tugmaster
  • joined 25 Aug'08 - 73 messages
  • United Kingdom
jan,

i 've just got this code 51 too on a E50Z-27.
so what did you do? clean and / or change the line contact tips?
  • Posted 3 Jul 2009 04:38
  • Modified 3 Jul 2009 04:39 by poster
  • By hellokitty
  • joined 11 Mar'09 - 86 messages
  • Ontario, Canada
that is what I was thinking. Just needed to prove it.
  • Posted 17 Apr 2009 05:42
  • By Jan_Haayer
  • joined 4 Mar'09 - 18 messages
  • Nova Scotia, Canada
the current limiter (you call PTC) shouldn,t get hot. it gets damaged by dirty line contact tips. the dirty tips can be caused by old batteries
  • Posted 17 Apr 2009 03:55
  • By kevin_k
  • joined 25 Nov'05 - 502 messages
  • dumfriesshire, United Kingdom

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