JLG Scissor Lift 824 Fault Code: LSS Cell #4 Error
Also called Platform Load Sense - LSS Cell #4 Error
LSS Cell #4 Error · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
Fault 824 means the JLG Load Sense System (LSS) has detected an error with load cell #4 on the platform. The UGM (Universal Ground Module) shuts down platform functions and shows a platform overloaded screen. It clears only with a power cycle.
High severity. The machine shuts down lift, telescope, rotate, and level functions from the platform station until the fault is cleared and power is cycled. Treat any load sense error as a real overload or sensor fault until proven otherwise, do not bypass it.
What does JLG Scissor Lift error code 824 mean?
Fault code 824 is logged when the JLG Universal Ground Module (UGM) detects that the platform station is active, the platform option is enabled, a platform is attached, and the Load Sense System module is reporting an error specifically on load cell #4.
The Load Sense System uses multiple load cells to monitor how much weight is on the platform. If one of those cells (cell #4) reports bad data or fails to report properly, the controller cannot trust the overall load reading, so it treats the situation as unsafe and locks out platform movement.
This is a protective fault, not just a nuisance code. The machine responds as though the platform may be overloaded or the sensing system itself is compromised, and it will not let the operator move the boom, telescope, rotate, or level the platform until the issue is resolved and power is cycled.
Common causes of 824
- A fault or failure in load cell #4 itself (wiring, connector, or internal sensor failure)
- A wiring or connection problem between load cell #4 and the LSS module
- An actual overload condition on the platform that the load sense system is detecting and reporting through cell #4
- A fault in the LSS module's processing or communication of the cell #4 signal
How to troubleshoot JLG Scissor Lift 824: first checks
- Check the platform load and remove any excess weight, tools, or material that may be causing an actual overload condition before assuming a sensor fault
- Inspect the wiring and connectors between load cell #4 and the LSS module for corrosion, looseness, or damage
- Visually inspect load cell #4 itself for physical damage, and confirm it is mounted and seated correctly
- Cycle power to the machine to see if the fault clears, since this code latches until power cycle
- If the fault returns immediately after a power cycle with no excess load on the platform, suspect the load cell or its wiring rather than an actual overload
How the code clears
Fault 824 latches until power cycle. There is no separate reset procedure listed beyond cycling power to the machine. If the underlying load cell or wiring problem is not corrected, the fault will likely reset again once the platform station is activated with a platform attached.
Frequently asked questions
What does JLG fault code 824 mean?
It means the Load Sense System has detected an error on load cell #4 on the platform. The controller responds by disabling platform lift, telescope, rotate, and level functions and shows a platform overloaded message.
Why did my JLG scissor lift suddenly stop letting me raise or move the platform?
If fault 824 is active, the UGM has deactivated and inhibited the lift up, lift down, telescope in and out, rotate left and right, and level up and down outputs from the platform station because of the load cell #4 error.
How do I clear fault code 824 on a JLG lift?
The fault latches until you power cycle the machine. No other reset procedure is listed. If the underlying cause is not fixed, the fault can come back.
Does fault 824 mean the platform is actually overloaded?
It can mean that, since the trigger condition is tied to the load sense system reporting an error through load cell #4, which could reflect a real overload. It can also mean the load cell or its wiring has failed. Check the actual platform load first before assuming a sensor problem.
Is it safe to keep operating the lift after a power cycle clears fault 824?
Only if you have confirmed the platform is not overloaded and have inspected load cell #4 and its wiring for obvious problems. If the fault returns, do not continue operating until the load cell and wiring are properly inspected or repaired.
What is the LSS on a JLG scissor lift?
LSS stands for Load Sense System, the network of load cells that monitor platform weight and feed that data to the UGM to prevent overload operation.