Discussion:
Fault - 1684

please hep for this issue ,
The machine will start normally in the morning
can work the whole day

If you switch it off and tried to start it immediately
it wont start till after some time (cool off) + - 2 hours

If you tried more cranking a Fault - 1684 will appear
by returning the Key to OFF position then ON again the Fault will disappear
  • Posted 23 Nov 2014 23:42
  • By dib_k
  • joined 5 Nov'14 - 12 messages
  • lagos, Nigeria
Dib khanji
Showing items 1 - 4 of 4 results.
What application is this truck? does it get very hot, you could have a problem with your intake valves, they typically are not hardened
  • Posted 25 Nov 2014 10:10
  • By 67dave67
  • joined 4 Dec'08 - 38 messages
  • British Columbia, Canada
when the pressure of the injection pomp to the injectors is not high enough there is wear problem in the high pressure side
there is a easy test to make sure
cool down the pomp with cold water
first check the fuel valve below 8 volt it dont open in starting
  • Posted 25 Nov 2014 05:35
  • By AAPEE
  • joined 28 Aug'12 - 76 messages
  • Brussels, Belgium
Dear Brewski,

I've checked the injector pump and the nozzols are spraying fine and all the fuel system is good , the lift is not starting if it's hot. Will start after it will cool down.

Thanks for your reply.
  • Posted 25 Nov 2014 03:20
  • By dib_k
  • joined 5 Nov'14 - 12 messages
  • lagos, Nigeria
Dib khanji
The code 168-4 is low battery voltage. ?That would be normal if you are cranking for long periods of time. Have you checked for spark and fuel delivery.
  • Posted 25 Nov 2014 02:20
  • By BREWSKI
  • joined 10 Jan'12 - 1,699 messages
  • Nebraska, United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

UN Forklift FGL18T
HANGZHOU, Zhejiang, China
New - Sale
UN Forklift FB25N1LZ1
HANGZHOU, Zhejiang, China
New - Sale
Upcoming industry events …
December 4–7, 2025 - Goyang, Korea, Republic Of
March 10-12, 2026 - Hong Kong, Hong Kong
June 30-July 2, 2026 - Birmingham, United Kingdom
Global Industry News
edition #1258 - 27 November 2025
In this week’s Forkliftaction News , we report on Hyster-Yale laying off staff in the US amid what it describes as “challenging market conditions”... Continue reading
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY

PREMIUM business

Yale Lift Truck Technologies
Yale offers a full line of forklifts to help customers adapt to today's demanding supply chain.