Discussion:
CAT- NNR40 -CODE A4

Key on A4Code
Unit functions after the key sw cycled twice, check the tips inspected plunger and fuses are O.K.
I need values for the coils? and what about the sense lines?is there something I'm missing.
  • Posted 23 Feb 2009 15:31
  • By LOGIC
  • joined 6 Dec'08 - 70 messages
  • Ontario, Canada
Showing items 1 - 2 of 2 results.
Prince thanks for yr help; version below 2.1 should be upgraded,not this case.With hours of troubleshooting i narrow it down to the VFC.
THANKS
  • Posted 21 Apr 2009 23:05
  • By LOGIC
  • joined 6 Dec'08 - 70 messages
  • Ontario, Canada
Hello LOGIC, I just looked up a code A4 for a NRR40 it says COP on the VFC has timed out.
-Check vehicle static straps
-Use D-cat, version 2.8 or above to resolve code
-Vehicle Manager may be bad
Looks like you have to hook up the CAT PC to troubleshoot and reset codes. thats all the information i have sorry
  • Posted 25 Feb 2009 01:50
  • By Prentice
  • joined 25 Jun'08 - 600 messages
  • Ontario, Canada

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.

SMV (Konecranes) 12-1200B
Balling, Denmark
Used - Sale
Maxlion MTF25-60-2WD
Hangzhou, China
New - Sale
Upcoming industry events …
January 28-30, 2026 - Bangkok, Thailand
March 4-5, 2026 - Detroit, Michigan, United States
March 24-26, 2026 - Stuttgart, Germany
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY
Latest job alerts …
Erie, PA, United States
Dayton, OH, United States
Fact of the week
Foundling hatches are safe, anonymous drop-off points for unwanted infants, allowing parents in crisis a way to surrender a baby safely without fear of punishment, ensuring the child is rescued and cared for. The concept started in the 12th century, was abandoned in the late 19th century, then reintroduced in 1952. It has since been adopted in many countries.
Global Industry News
edition #1260 - 11 December 2025
In this week’s Forkliftaction News we report on DHL Supply Chain signing a deal to deploy autonomous mobile robots (AMRs) at its Mexican retail operations and look at Guidance Automation’s successful trial of an AMR with a hydrogen fuel cell... 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