JLG Scissor Lift 92 Fault Code: Fuel Pump High Voltage
Also called Indicates Controller (Module) Problems - LSS EEPROM Error, LSS EEPROM Error
Fuel Pump High Voltage · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
Fault code 92 (flash code 9-2, SPN 94 / FMI 3) signals an EEPROM error inside the Load Sensing System (LSS) module. The module's stored memory is corrupted, and depending on how machine setup is configured, the machine may treat itself as overloaded and cut out platform or all functions until power is cycled after the underlying problem is fixed.
High severity. This code can cut out platform functions or all machine functions because the controller assumes the machine is overloaded. It will not clear on its own; it needs a fix and a power cycle. Treat it as a stop-and-diagnose issue before returning the lift to service.
What does JLG Scissor Lift error code 92 mean?
Fault code 92 comes from the Load Sensing System (LSS) module, the controller responsible for monitoring load on the platform and preventing operation when the machine senses an overload condition. This code specifically means the module's onboard memory (EEPROM) has a stored data error, not that an actual overload was measured by a sensor reading.
The LSS module sends a status message (0x81) reporting an EEPROM error. Depending on how the machine setup's load parameter is configured, either 1 (CUTOUT PLT, cutting out platform functions) or 2 (CUTOUT ALL, cutting out all functions), the machine will restrict operation as if it were overloaded. This condition is retained in the module until power is recycled, even if the underlying memory issue is addressed.
Because this is a memory integrity fault rather than a live sensor fault, resolving it usually means verifying and re-entering the module's settings or re-calibrating the LSS, then clearing the retained fault with a power cycle.
Common causes of 92
- Memory used to retain settings on the load sensing system module has been corrupted, requiring the settings to be verified and re-calibrated.
- The LSS module reports an EEPROM error via its status message (0x81) while machine setup's load parameter is set to 1 (CUTOUT PLT) or 2 (CUTOUT ALL), causing the fault to be retained until power is cycled.
- The vehicle is assumed to be overloaded as a result of the corrupted memory state, even without an actual load event.
How to troubleshoot JLG Scissor Lift 92: first checks
- Check the analyzer or diagnostic display for the exact flash code (9-2) and confirm it matches fault code 92 / SPN 94 FMI 3 before proceeding.
- Review the current machine setup load parameter (CUTOUT PLT or CUTOUT ALL) to understand which functions are being restricted and why.
- Inspect wiring and connectors to the LSS module for corrosion, looseness, or damage that could contribute to memory or communication errors, even though the core issue is stored EEPROM data.
- Verify all LSS module entries and settings against the correct calibration values, since corrupted memory typically requires a full re-verification rather than a simple reset.
How the code clears
After the underlying memory or calibration problem is resolved, recycle power to the machine to clear the fault. No separate clearing step is listed beyond re-verifying and re-calibrating the LSS module settings and then power cycling the machine.
Frequently asked questions
What does JLG fault code 92 mean?
It means the Load Sensing System (LSS) module has detected an EEPROM error, a corruption in its stored memory. This is reported as flash code 9-2 and corresponds to SPN 94 / FMI 3. It often causes the machine to act as if it is overloaded, cutting out platform or all functions.
Why is my scissor lift showing an overload condition with fault code 92?
Because the LSS module's memory is corrupted, the module can end up assuming the vehicle is overloaded even without an actual excess load. The machine setup determines whether this cuts out platform functions only or all functions.
Will cycling the power clear fault code 92?
Power cycling is needed after the resolution, but simply cycling power without fixing the underlying memory or calibration problem may not permanently clear the fault, since it is retained until the root cause is addressed.
Do I need to recalibrate the LSS module to fix code 92?
Yes. Since the cause is corrupted memory used to retain settings, the listed resolution is to verify all entries and re-calibrate the load sensing system module before power cycling the machine.
Is it safe to keep operating the lift with fault code 92 active?
No. Since the fault can indicate the machine believes it is overloaded and may cut out platform or all functions, continued operation risks unexpected loss of function. Diagnose and resolve the fault before returning the machine to service.
What is SPN 94 / FMI 3 on a JLG scissor lift?
SPN 94 / FMI 3 is the standardized diagnostic code pairing associated with fault code 92, pointing to a load sensing system module memory (EEPROM) error rather than a live sensor overrange or short.