Unicarriers (& Nissan) YG1F2A30U:
P03 and P07 Fault codes

Hi has anyone had these fault codes before? I know they are both communication errors and have checked everything i can think of. Even tried swapping VCM with another identical unit.
Have checked loom can see any issue there.

Thanks brad
  • Posted 26 Apr 2020 11:06
  • Discussion started by Brad43
  • New Zealand, New Zealand
Showing items 1 - 6 of 6 results.
It's a older unit. Lift works fine just jeeps popping up these codes.
  • Posted 1 Jun 2025 02:29
  • Reply by Justaguy75
  • Alabama, United States
Not sure if that harness would work in a 1F4 model. I only encountered that issue in the 1F2 models. Does your dash turn off as soon as you shut the key off? Unicarriers tech service told me back then that it wouldn't cause any harm. Is this a new unit or did it just start happening all of a sudden? If it is a used unit then it is probably something else causing that problem.
  • Posted 1 Jun 2025 02:05
  • Reply by mwjago
  • Montana, United States
mwjago
Where does this harness plug in at? Thanks. Also the lift I am working on is a mw1f4a45v with p03 and p07 codes. Does this harness work for this lift also?
  • Posted 30 May 2025 05:44
  • Modified 30 May 2025 05:46 by poster
  • Reply by Justaguy75
  • Alabama, United States
Hello Keith; That p/n for the repair harness that causes the P07 code is 24027-FV50A When it first came out Unicarriers only had about 6 on hand, and that was years ago. I'm retired now so maybe they have more on hand now. Good luck!!!
  • Posted 28 Nov 2023 13:46
  • Reply by mwjski
  • Montana, United States
I have 2 units in our territory that are giving these codes. do you happen to have the part # that unicarriers sells for this situation?
  • Posted 25 Jul 2023 06:03
  • Reply by keith_m
  • Texas, United States
keith@kmcequipment.com
Your dash monitor is probably shutting off when you turn the key off. Your VCM still holds power for a few seconds and cannot communicate with the monitor therefore causing your P07 code. The newest trucks keep power to the monitor so the two can communicate with each other. This code is not harmful to the but is more of just a pain because it keeps coming up all the time. Nissan makes a sub harness to install to keep power to the dash monitor for about 3 seconds.
  • Posted 8 May 2021 05:19
  • Reply by mwjski
  • Montana, United States

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Your Focus
Global Industry News
edition #1234 - 12 June 2025
As a journalist focussed on the materials handling sector, it is difficult not to notice the regularity of news stories that detail injuries to – or worse still the deaths of – forklift operators... Continue reading
Movers & Shakers
Manojit Acharya Manojit Acharya
APAC vice president, Jungheinrich
Senior VP direct sales and marketing, Daifuku Intralogistics America
Regional sales manager for Malaysia and Singapore, Libiao Robotics
Area sales manager - Spain, Trex Parts
UN Forklift FBRP15NQZ2
HANGZHOU, Zhejiang, China
New - Sale
JLG 1932R
JLG 1932R 2017
Flesherton, Ontario, Canada
Used - Sale
Fact of the week
The Michelin Guide with its star rating system originated in France in 1900. The guide was created as a marketing tool to encourage more car travel and consequently increase the demand for tyres. It initially contained maps, tire repair instructions, and lists of restaurants, hotels, and mechanics.
Taylor TX175
Coraopolis, Pennsylvania, United States
New - Sale & Hire
Toyota 02-8FD25
Yokohama, Japan
Used - Sale

PREMIUM business

VETTER Forks, Inc.
The world's most comprehensive product range as well as the most intelligent sensor fork for more safety and efficiency.
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025