1. Home
  2. Forums
  3. Maintenance & Troubleshooting
  4. Code 425

Discussion:
Code 425

I have a truck SP 3500 pulling up the code 425 when slightly movings in FF direction, checked the manual and ran everything it stated. POT is good. Voltage is as stated in manual. Last thing i did was the Handle Calibration.

any one else try or find something else other than this to fix this issue? much appreciated.
  • Posted 3 Jun 2019 19:23
  • By Mechanic_1217
  • joined 31 May'19 - 9 messages
  • New York, United States
Post a ReplyReport this post
Showing items 1 - 2 of 2 results.
Yes it was an issue only in one direction. I looked at the switch as u stated, and notice the throttle wasn't engaging the switch once it was being put in reverse. I noticed the throttle was a bit worn so I adjusted the the screw on the switch to engage better.
thank you for the response !
  • Posted 10 Jun 2019 15:50
  • By Mechanic_1217
  • joined 31 May'19 - 9 messages
  • New York, United States
Post a ReplyReport this post
From my experience with the Crown SP's we have found issues with the small directional switches. Look real close at the terminals on the switches for discoloration. Meaning high resistance. You can also run a resistance test on them with a good meter. As I understand you are having issues with on one direction correct ??
  • Posted 5 Jun 2019 04:27
  • By ScooterB
  • joined 5 Jun'19 - 4 messages
  • Pennsylvania, United States
Post a ReplyReport this post

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.

Aichi SR10C1SM
Aichi SR10C1SM 2018
Yokohama, Japan
Used - Sale
UN Forklift FBRP15NQZ2
UN Forklift FBRP15NQZ2
HANGZHOU, Zhejiang, China
New - Sale
|
Forklift Diaries
Read more Forklift Diaries blog articles
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
Movers & Shakers
Sue Tomic Sue Tomic
Sue Tomic
Board chair, Australian Supply Chain & Logistics Association (ASCLA)
Van Cuong Lo
Strategic business development manager, Heli Materials Handling Oceania
Kieran White
Chief executive officer, Hire Industry Association of New Zealand (HIANZ)
Steven Ballerini
Chief executive officer, Australian Supply Chain & Logistics Association (ASCLA)
Your Focus
Stuart Taylor
How positive friction prevents forklift accidents before they happen
Stuart Taylor
Read blog
Read more Your Focus blog articles
Fact of the week
According to studies published in the English Journal of Medicine, the impact of daylight savings is revealed by a 24% increase in heart attacks on the Monday following the spring shift forward. When clocks move back in autumn, heart attacks drop by about 21%, suggesting that loss of sleep is an important driver.